[llvm] r301007 - [libFuzzer] Changing thread_local to __thread in libFuzzer
Kostya Serebryany via llvm-commits
llvm-commits at lists.llvm.org
Fri Apr 21 11:22:24 PDT 2017
yes, see it. thanks!
On Fri, Apr 21, 2017 at 11:22 AM, Kuba Mracek <mracek at apple.com> wrote:
> We've reverted the patch that tries to build libFuzzer by default.
>
> We'll look into that.
>
> Kuba
>
> On 21 Apr 2017, at 11:17, Kostya Serebryany via llvm-commits <
> llvm-commits at lists.llvm.org> wrote:
>
> Breaks on windows.
>
> In file included from C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\yvals.h:7:
> C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xkeycheck.h(250,5): error: The C++ Standard Library forbids macroizing keywords. Enable warning C4005 to find the forbidden macro.
> #error The C++ Standard Library forbids macroizing keywords. Enable warning C4005 to find the forbidden macro.
> ^
>
> http://lab.llvm.org:8011/builders/sanitizer-windows/builds/10026/steps/build%20LLVMFuzzer/logs/stdio
>
>
> Why did the cmake check on windows decide to use the -D hack?
>
>
>
>
> On Fri, Apr 21, 2017 at 10:39 AM, Kuba Mracek via llvm-commits <
> llvm-commits at lists.llvm.org> wrote:
>
>> Author: kuba.brecka
>> Date: Fri Apr 21 12:39:50 2017
>> New Revision: 301007
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=301007&view=rev
>> Log:
>> [libFuzzer] Changing thread_local to __thread in libFuzzer
>>
>> Old Apple compilers do not support thread_local keyword. This patch adds
>> -Dthread_local=__thread when the compiler doesn't support thread_local.
>>
>> Differential Revision: https://reviews.llvm.org/D32312
>>
>>
>> Modified:
>> llvm/trunk/lib/Fuzzer/CMakeLists.txt
>>
>> Modified: llvm/trunk/lib/Fuzzer/CMakeLists.txt
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Fuzzer/CM
>> akeLists.txt?rev=301007&r1=301006&r2=301007&view=diff
>> ============================================================
>> ==================
>> --- llvm/trunk/lib/Fuzzer/CMakeLists.txt (original)
>> +++ llvm/trunk/lib/Fuzzer/CMakeLists.txt Fri Apr 21 12:39:50 2017
>> @@ -1,3 +1,16 @@
>> +include(CheckCXXSourceCompiles)
>> +
>> +CHECK_CXX_SOURCE_COMPILES("
>> + static thread_local int blah;
>> + int main() {
>> + return 0;
>> + }
>> + " HAS_THREAD_LOCAL)
>> +
>> +if( NOT HAS_THREAD_LOCAL )
>> + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Dthread_local=__thread")
>> +endif()
>> +
>> set(LIBFUZZER_FLAGS_BASE "${CMAKE_CXX_FLAGS}")
>> # Disable the coverage and sanitizer instrumentation for the fuzzer
>> itself.
>> set(CMAKE_CXX_FLAGS "${LIBFUZZER_FLAGS_BASE}
>> -fno-sanitize-coverage=trace-pc-guard,edge,trace-cmp,indirect-calls,8bit-counters
>> -Werror")
>>
>>
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