valgrind不显示行号
如下，t是我编写的一个存在内存泄露的小程序，用valgrind成功检测到了，但是没有显示行号，在3399的ubuntu系统和buildroot系统下均是如此：root@firefly:~# valgrind --leak-check=full ./t
==2693== Memcheck, a memory error detector
==2693== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==2693== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==2693== Command: ./t
==2693==
hi
==2693==
==2693== HEAP SUMMARY:
==2693== in use at exit: 1 bytes in 1 blocks
==2693== total heap usage: 2 allocs, 1 frees, 1,025 bytes allocated
==2693==
==2693== 1 bytes in 1 blocks are definitely lost in loss record 1 of 1
==2693== at 0x4845BFC: malloc (in /usr/lib/valgrind/vgpreload_memcheck-arm64-linux.so)
==2693==
==2693== LEAK SUMMARY:
==2693== definitely lost: 1 bytes in 1 blocks
==2693== indirectly lost: 0 bytes in 0 blocks
==2693== possibly lost: 0 bytes in 0 blocks
==2693== still reachable: 0 bytes in 0 blocks
==2693== suppressed: 0 bytes in 0 blocks
==2693==
==2693== For counts of detected and suppressed errors, rerun with: -v
==2693== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
root@firefly:~#
而检测相同的程序t，在x86下就会显示行号，如下：
==17689== Memcheck, a memory error detector
==17689== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==17689== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==17689== Command: ./t
==17689==
hi
==17689==
==17689== HEAP SUMMARY:
==17689== in use at exit: 1 bytes in 1 blocks
==17689== total heap usage: 2 allocs, 1 frees, 1,025 bytes allocated
==17689==
==17689== 1 bytes in 1 blocks are definitely lost in loss record 1 of 1
==17689== at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17689== by 0x10869B: main (t.c:6)
==17689==
==17689== LEAK SUMMARY:
==17689== definitely lost: 1 bytes in 1 blocks
==17689== indirectly lost: 0 bytes in 0 blocks
==17689== possibly lost: 0 bytes in 0 blocks
==17689== still reachable: 0 bytes in 0 blocks
==17689== suppressed: 0 bytes in 0 blocks
==17689==
==17689== For counts of detected and suppressed errors, rerun with: -v
==17689== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
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