为什么Cygwin gdb在调试带有线程的程序时遇到问题？
我在调试Cygwin上带有线程的程序时遇到问题 当下面的程序到达为什么Cygwin gdb在调试带有线程的程序时遇到问题？,c,gdb,pthreads,cygwin,C,Gdb,Pthreads,Cygwin,我在调试Cygwin上带有线程的程序时遇到问题 当下面的程序到达pthread\u create（）调用时，调试会话会得到一个未知的目标异常，显然是在对ntdll的调用中！RtlAllocateHeap（） 我知道在过去我能够在Eclipse中调试线程——我是否遗漏了一些新的秘密设置，或者这是Eclipse的问题 为了记录在案，我正在使用gcc 7.4.0/gdb 8.1.1/Eclipse 4.13.0运行Cygwin64（CYGWIN_NT-6.1） 直接从命令行运行时，程序运行良好。我还可
pthread\u create（）ntdll的调用中！RtlAllocateHeap（）pthread\u create（）jay.elston@M4800-1RBTK12 ~/threadTest
$ cc -g threads.c
jay.elston@M4800-1RBTK12 ~/threadTest
$ gdb a.exe
GNU gdb (GDB) (Cygwin 8.1.1-1) 8.1.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-cygwin".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from a.exe...done.
(gdb) b 13
Breakpoint 1 at 0x10040108c: file threads.c, line 13.
(gdb) run
Starting program: /home/jay.elston/threadTest/a.exe
[New Thread 624.0xebc]
[New Thread 624.0x2ef0]
[New Thread 624.0x1b24]
[New Thread 624.0x1074]
[New Thread 624.0x2088]
[New Thread 624.0x2710]
[New Thread 624.0x2a1c]
gdb: unknown target exception 0x80000001 at 0x77a97b97
Thread 7 received signal ?, Unknown signal.
[Switching to Thread 624.0x2a1c]
0x0000000077a97b97 in ntdll!RtlAllocateHeap ()
from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
(gdb)c
Continuing.
[New Thread 624.0x2374]
[Thread 624.0x2710 exited with code 2147483649]
[Thread 624.0x2a1c exited with code 2147483649]
[Thread 624.0x2088 exited with code 2147483649]
[Thread 624.0x1b24 exited with code 2147483649]
[Thread 624.0x1074 exited with code 2147483649]
[Thread 624.0x2374 exited with code 2147483649]
[Inferior 1 (process 624) exited with code 020000000001]
(gdb) quit
jay.elston@M4800-1RBTK12 ~/threadTest
$ ./a.exe
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// Start a thread using pthread_create
#include <stdio.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include <pthread.h>
void *fifteenSeconds(void *arg)
{
struct timespec sleepTime;
struct timespec sleptTime;
int i = 0;
while ( i++ < 15 ) {
printf("%d\n", i);
sleepTime.tv_sec = 01;
sleepTime.tv_nsec = 000000000;
nanosleep(&sleepTime, &sleptTime);
}
return (void *)0;
}
int main ( int argc, char *argv[] )
{
pthread_t fifteenSecondsThreadId;
int rc = 0;
rc = pthread_create(&fifteenSecondsThreadId, (void *)0, &fifteenSeconds, (void *)0);
if ( rc != 0 ) {
fprintf(stderr, "(%s,%d): Error %d creating thread for io handler: %s\n"
, __FILE__, __LINE__
, errno, strerror(errno)
);
return rc;
}
pthread_join(fifteenSecondsThreadId, (void *)0);
return 0;
}
//使用pthread\u create启动线程
#包括
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无效*第五秒（无效*参数）
{
结构timespec睡眠时间；
struct timespec sleptime；
int i=0；
而（i++<15）{
printf（“%d\n”，i）；
sleepTime.tv_sec=01；
sleepTime.tv_nsec=000000000；
纳秒睡眠（睡眠时间和睡眠时间）；
}
返回（void*）0；
}
int main（int argc，char*argv[]）
{
pthread_t fifteensecondsthread；
int rc=0；
rc=pthread_create（&fifteenSecondsThreadId，（void*）0，&fifteenSeconds，（void*）0）；
如果（rc！=0）{
fprintf（stderr，（%s，%d）：为io处理程序创建线程时出现错误%d:%s\n
，文件，行__
，errno，strerror（errno）
);
返回rc；
}
pthread_join（第五个第二个线程ID，（void*）0）；
返回0；
}