Gcc 链接器脚本中的位置计数器（.）更新

链接器脚本中的位置计数器有问题。不知道这是一个bug还是我期望的输出错误

我有一个bss部门

/* Program bss, zeroed out during init. */
.bss :
{
    . = ALIGN(4);
    __bss_start = .;
    *(.bss*)
    *(.COMMON*)
    . = ALIGN(4);
    __bss_end = .;
    __heap_start = .;
} >sram_u
__bss_size = SIZEOF(.bss);

我的问题是（uu bss_end-u bss_start）不等于u bss_size。如果我改为在.bss节外指定uu_bss_end，则会得到预期值。如果我用elfread检查节标题，我会得到预期的.bss大小

我使用的链接器是：

GNU ld (GNU Tools for ARM Embedded Processors) 2.23.2.20131129
Copyright 2012 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.

和海湾合作委员会

arm-none-eabi-gcc (GNU Tools for ARM Embedded Processors) 4.8.3 20131129 (release)
[ARM/embedded-4_8-branch revision 205641]
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE

所以问题是位置计数器（.）是应该在节定义中更新，还是我只是用错了

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PS：希望我使用的是正确的术语…

很抱歉没有早点回复

问题是有一个问题。在普通之前。链接器脚本应该是

.bss :
{
    . = ALIGN(4);
    __bss_start = .;
    *(.bss*)
    *(COMMON*)
    . = ALIGN(4);
    __bss_end = .;
    __heap_start = .;
} >sram_u
__bss_size = SIZEOF(.bss);

我在查看地图文件时也漏掉了一些东西。链接器将在bss中将公共设置为默认设置，但这不会被.bss部分内的uu bss_end看到。将_bss_end移动到bss节声明之外将捕获它。通过将-fno COMMON添加到gcc中删除了公共块