Details
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Bug
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Status: On Hold
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Not Prioritized
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Resolution: Unresolved
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Code Generation Tools
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CODEGEN-8548
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ARM_20.2.4.LTS
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default
Description
The attached test case has a file named try1.cpp with these lines ...
#include <regex> int a;
It also has a sub-directory named subdir that contains a file named mutex.hpp with this line ...
#warn This is not expected
Build it ...
% armcl -Isubdir try1.cpp
"subdir\mutex.hpp", line 1: warning: #warning directive: This is not expected
"C:\ti\compilers\ti-cgt-arm_20.2.4.LTS\include\libcxx\__locale", line 166: error: identifier "once_flag" is undefined
"C:\ti\compilers\ti-cgt-arm_20.2.4.LTS\include\libcxx\__locale", line 171: error: constexpr "std::__2::locale::id::id()" provides no initializer for:
member "std::__2::locale::id::__flag_"
2 errors detected in the compilation of "try1.cpp".
>> Compilation failure
The system header file <regex> includes <mutex>. But the user header file "mutex.hpp" is included instead. <mutex> defines the structure once_flag, and <__locale> refers to it. Because once_flag is not defined, the error diagnostics occur.
