Linker 使用-b符号函数有缺点吗？
我最近在GNU ld中发现了链接器选项“-b符号函数”：Linker 使用-b符号函数有缺点吗？,linker,visibility,elf,dynamic-library,Linker,Visibility,Elf,Dynamic Library,我最近在GNU ld中发现了链接器选项“-b符号函数”： -Bsymbolic When creating a shared library, bind references to global symbols to the definition within the shared library, if any. Normally, it is possible for a program linked against a shared library to override
-Bsymbolic
When creating a shared library, bind references to global symbols to the
definition within the shared library, if any. Normally, it is possible
for a program linked against a shared library to override the definition
within the shared library.
This option is only meaningful on ELF platforms which support shared libraries.
-Bsymbolic-functions
When creating a shared library, bind references to global function symbols
to the definition within the shared library, if any.
This option is only meaningful on ELF platforms which support shared libraries.
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
-fvisibility=hidden-b符号函数#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
-Bsymbolic#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
-b符号函数的任何陷阱？我计划只使用它，因为我认为-Bsymbolic
将打破异常（我认为它将使对typeinfo对象的引用不统一）#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
谢谢 回答我自己的问题，因为我刚刚为此赢得了一枚风滚草徽章。。。后来我发现了
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
-Bsymbolic#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
-b符号函数的任何陷阱？我计划只使用它，因为-Bsymbolic将打破异常，我认为（它将使对typeinfo对象的引用不统一）
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
我仔细研究了一下，似乎没有什么问题。LISSTDC +库显然是这样做的，或者至少已经考虑过了，他们只需要添加<代码>动态列表CPP new <代码>仍然有<代码>运算符new <代码>统一（以防止多个分配器/分配器混合在程序中的问题，但我认为无论如何这些程序都会被破坏）。Ubuntu使用它或默认情况下使用它，它似乎会与某些软件包产生冲突。但总的来说，我认为它应该能很好地发挥作用。有副作用的案例。有文件证明的一个：
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
我还想进一步了解它，因为我现在有这样一个案例。也不建议使用-b符号函数构建glibc。以下是我得到的结果：
Core was generated by `/home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/elf/ld-linux .'.
Program terminated with signal 11, Segmentation fault.
#0 0x400a3e90 in _int_free ()
from /home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/libc.so.6
(gdb) where
#0 0x400a3e90 in _int_free ()
from /home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/libc.so.6
#1 0x4016b94b in __libc_dlsym ()
from /home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/libc.so.6
#2 0x4004c2c7 in __gconv_find_shlib ()
from /home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/libc.so.6
#3 0x40042320 in find_derivation ()
from /home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/libc.so.6
#4 0x40042889 in __gconv_find_transform ()
from /home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/libc.so.6
#5 0x400d6f00 in __wcsmbs_load_conv ()
from /home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/libc.so.6
#6 0x400c86f6 in mbrtowc ()
from /home/lano1106/dev/packages/glibc/repos/core-i686/src/glibc-build/libc.so.6
#7 0x08048914 in ?? ()
#8 0x00000000 in ?? ()
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
您可以说这是一个“强化”选项，因为它确保了对库内函数的调用肯定会在这里结束。但我发现的一个问题是一些项目测试套件
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
例如，libvirt测试套件希望调用刚刚构建的libvirt0.so，但也会模拟一些将从那里完成的调用
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
由于在构建中使用了-b符号函数
，因此会将测试作为原始函数而不是模拟函数进行调用
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
示例回溯
好例子：
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore（arch=VIR_arch_PPC64）位于../../tests/virhostcpumock.c:30
#VirhostCPugetinfoppopulateLinux中的1 0x00007ffff7c1e4c4（cpuinfo=，arch=VIR_arch\u PPC64，CPU=0x7FFFFFFF38，mhz=，节点=0x7FFFFFFFFF40，套接字=0x7FFFFF44，内核=0x7FFFFFFF48，线程=0x7FFFFFFFFF4C）
在../../../src/util/virhostcpu.c:661
#LinuxTestCompareFile（输出文件=0x555558f150）/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected”中的2 0x0000555557e6f·
cpuinfofile=0x55555a3f10“/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo”），位于../../tests/virhostcputest.c:44
#3 linuxTestHostCPU（不透明=）位于../../../tests/virhostcputest.c:189
#4 0x000055555914D在../../tests/testutils.c:176处的virTestRun中（标题=0x55C0A1“subcores2”，正文=0x55557CC0，数据=0x7FFFFFE0C0）
#5 0x0000555781A在mymain（）中位于../../../tests/virhostcputest.c:263
#位于../../tests/testutils.c:1114的virTestMain（argc=1，argv=0x7fffffffe2c8，func=0x5577b0）中的6 0x00005559DF4
#7 0x00007FF79BB09B位于../csu/libc start处的uuu libc_start_main（main=0x5576a0，argc=1，argv=0x7fffffffe2c8，init=，fini=，rtld_fini=，stack_end=0x7FFFFFE2B8）中
#8 0x000055576EA位于../../../tests/virhostcputest.c:278
坏情况：
#0 virHostCPUGetThreadsPerSubcore (arch=VIR_ARCH_PPC64) at ../../../tests/virhostcpumock.c:30
#1 0x00007ffff7c1e4c4 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdf38, mhz=<optimized out>, nodes=0x7fffffffdf40, sockets=0x7fffffffdf44, cores=0x7fffffffdf48, threads=0x7fffffffdf4c)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x55555558f150 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x5555555a3f10 "/build/libvirt-OUKR8i/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe0c0) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe2c8, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79bb09b in __libc_start_main (main=0x5555555576a0 <main>, argc=1, argv=0x7fffffffe2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe2b8) at ../csu/libc-start.c:308
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore (arch=arch@entry=VIR_ARCH_PPC64) at ../../../src/util/virhostcpu.c:1119
#1 0x00007ffff7c27e04 in virHostCPUGetInfoPopulateLinux (cpuinfo=<optimized out>, arch=VIR_ARCH_PPC64, cpus=0x7fffffffdea8, mhz=<optimized out>, nodes=0x7fffffffdeb0, sockets=0x7fffffffdeb4, cores=0x7fffffffdeb8, threads=0x7fffffffdebc)
at ../../../src/util/virhostcpu.c:661
#2 0x0000555555557e6f in linuxTestCompareFiles (outputfile=0x5555555a5c30 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected", arch=VIR_ARCH_PPC64,·
cpuinfofile=0x55555558fd20 "/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo") at ../../../tests/virhostcputest.c:44
#3 linuxTestHostCPU (opaque=<optimized out>) at ../../../tests/virhostcputest.c:189
#4 0x000055555555914d in virTestRun (title=0x55555555c0a1 "subcores2", body=0x555555557cc0 <linuxTestHostCPU>, data=0x7fffffffe030) at ../../../tests/testutils.c:176
#5 0x000055555555781a in mymain () at ../../../tests/virhostcputest.c:263
#6 0x0000555555559df4 in virTestMain (argc=1, argv=0x7fffffffe238, func=0x5555555577b0 <mymain>) at ../../../tests/testutils.c:1114
#7 0x00007ffff79b009b in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x00005555555576ea in _start () at ../../../tests/virhostcputest.c:278
#0 virHostCPUGetThreadsPerSubcore（arch=arch@entry=VIR_ARCH_PPC64）位于../../../src/util/virhostcpu.c:1119
#VirhostCPugetinfoppopulateLinux中的1 0x00007ffff7c27e04（cpuinfo=，arch=VIR_arch\u PPC64，CPU=0x7fffffffdea8，mhz=，节点=0x7FFFFFFFFFDEB0，套接字=0x7FFFFFDEB4，内核=0x7FFFFFFFFFDEB8，线程=0x7FFFFFFFFFFFDEBC）
在../../../src/util/virhostcpu.c:661
#LinuxTestCompareFile（输出文件=0x55555A5C30）/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.expected“，arch=VIR_arch_ppc64·
cpuinfofile=0x555558fd20“/build/libvirt-4biJ7f/libvirt-4.10.0/tests/virhostcpudata/linux-ppc64-subcores2.cpuinfo”），位于../../tests/virhostcputest.c:44
#3 linuxTestHostCPU（不透明=）位于../../../tests/virhostcputest.c:189
#4 0x000055555914D在../../tests/testutils.c:176处的virTestRun中（标题=0x55C0A1“subcores2”，正文=0x55557CC0，数据=0x7FFFFFE030）
#5 0x0000555781A在mymain（）中位于../../../tests/virhostcputest.c:263
#位于../../tests/testutils.c:1114的virTestMain（argc=1，argv=0x7fffffffe238，func=0x5577b0）中的6 0x00005559DF4
#7 0x00007FF79B009B，位于/lib/x86\u 64-linux-gnu/libc.so.6中的
#8 0x000055576EA位于../../../tests/virhostcputest.c:278
比较这两个和y中的virHostCPUGetThreadsPerSubcore
的源代码