[Valgrind-users] 转发: [HELP] Is there any bug with the program built by the clang4.0 with thumbv7--linux-android command para.

[Wuweijia <wuw...@hu...>]

发件人: Wuweijia
发送时间: 2017年9月12日 12:34
收件人: 'val...@li...' <val...@li...>
抄送: Fanbohao <fan...@hu...>
主题: [HELP] Is there any bug with the program built by the clang4.0 with thumbv7--linux-android command para.

Hello:
                First, I build the program with clang 4.0 with 32 bit command  param,  but  it run failed because there is unknown instruction;
                Second , I build the program with clang 4.0 with 64 bit command param, and  it run success.
Third,  I build the same program with clang 3.8  with 32 bit command param, and I run success, there is no unknown instructions.

                There is the error log:
                disInstr(thumb): unhandled instruction: 0x450B 0xD104
==24328== valgrind: Unrecognised instruction at address 0x1089c5.
==24328==    at 0x1089C4: compare_exchange_strong (atomic:943)
==24328==    by 0x1089C4: atomic_compare_exchange_strong_explicit<unsigned int> (atomic:1376)
==24328==    by 0x1089C4: main (testClang.cpp:22)

                There is some point :
                1: I build the arm application which is 32 bit , but it ran in the aarch64  server which is 64 bit;

                The rar pack  contain:
                1: the compile command with clang 4.0:
                2: the error log
                3: the function  main instruction (that compile with clang3.8 and clang4.0)

                I had search the code. In the implementation,  no matter clang3.8 or clang4.0  they all call __c11_atomic_compare_exchange_strong function to check the value. I think the source code maybe it is the same and fine.

                If you need any more information , Please send e-mail to me and how to gather it step by step. I am waiting for reponse.

BR
Owen