Question

英特尔 icc 编译器具有运行时检查功能-check-pointers=write，可以检查指针是否写入超出预期的数据。当我在我的代码上运行它时，我在 gdb 中得到了数百个错误。我希望 gdb 在此错误的第一个实例上中断，但它不是作为例外或信号实现的，因此catch throw或catch signal不会工作，我不知道是否有与此功能相关的功能名称。

有没有办法让调试器＆＃34;打破＆＃34;当运行时检查程序命中它时？

Answer 1

-check-pointers功能会安装来自libchkp.so的代码，并且所有功能都包含chkp前缀。使用info functions chkp快速搜索gdb中的函数表明traceback函数被称为“chkp_print_traceback”，因此这将在回溯发生时安装断点：

break chkp_print_traceback

现在它停止了！

[New Thread 0x7fffce34c700 (LWP 41385)]
[New Thread 0x7fffceb4d700 (LWP 41384)]
[New Thread 0x7fffd034e700 (LWP 41383)]
CHKP: Bounds check error ptr=0x7ffe24685870 sz=4 lb=0x7ffe24685860 ub=0x7ffe2468586f loc=0xb170b0
[New Thread 0x7ffec47fc700 (LWP 41621)]
[New Thread 0x7ffe29fff700 (LWP 41622)]
[New Thread 0x7ffed47fe700 (LWP 41603)]
[New Thread 0x7ffecc7fe700 (LWP 41605)]
[New Thread 0x7ffef07f8700 (LWP 41598)]
[New Thread 0x7fff147f8700 (LWP 41597)]
[New Thread 0x7fff387f8700 (LWP 41595)]
[New Thread 0x7fff687f8700 (LWP 41594)]
[New Thread 0x7fff707f8700 (LWP 41590)]
[New Thread 0x7fff907f8700 (LWP 41589)]
[New Thread 0x7fffb45ec700 (LWP 41587)]
[New Thread 0x7ffec4ffd700 (LWP 41577)]
[New Thread 0x7ffec57fe700 (LWP 41442)]
[New Thread 0x7ffec7fff700 (LWP 41441)]
[New Thread 0x7ffecefff700 (LWP 41440)]
[New Thread 0x7ffed5fff700 (LWP 41439)]
[New Thread 0x7ffef0ff9700 (LWP 41438)]
[Switching to Thread 0x7ffec47fc700 (LWP 41621)]

Breakpoint 1, 0x00007ffff5f32d74 in chkp_print_traceback () from /opt/intel/composer_xe_2015.2.164/compiler/lib/intel64/libchkp.so
(gdb) where
#0  0x00007ffff5f32d74 in chkp_print_traceback () from /opt/intel/composer_xe_2015.2.164/compiler/lib/intel64/libchkp.so
#1  0x00007ffff5f31706 in __chkp_check_bounds () from /opt/intel/composer_xe_2015.2.164/compiler/lib/intel64/libchkp.so
#2  0x0000000000b170b0 in redacted

如何让gdb打破＆＃34; CHKP：Bounds check error＆＃34;来自icc`-check-pointers = write`

1 个答案: