The simple code below fails to compile under 4.9.0 using the compilation
command shown in the comment.
-------------------------------------------------
#include <iostream>
#include <condition_variable>
/* Compile with the command:
* x86_64-w64-mingw32-g++.exe \
* -D_WIN64 -Wall -Wextra -Werror \
* -std=c++11 -O3 -static-libgcc \
* -static-libstdc++ \
* mt.cc -o mt.exe
*
* Compiler version:
* 4.9.0 (x86_64-posix-seh-rev1, Built by MinGW-W64 project)
*
* Bug is invalid error message:
* mt.cc:25:7: error: array subscript is above array bounds
[-Werror=array-bounds]
*/
#define EXPOSE_BUG
//#define KEEP_BUG_BUT_SUPPRESS_DETECTION
class c_common
{
public:
explicit c_common()
{
#ifndef KEEP_BUG_BUT_SUPPRESS_DETECTION
std::cout << "c_common created\n";
#endif
}
~c_common(){ std::cout << "c_common destroyed\n"; }
int a{ 111 };
std::condition_variable cv_w2m[ 2 ];
#ifdef EXPOSE_BUG
std::condition_variable cv_m2w[ 2 ];
#endif
};
/*
Defining KEEP_BUG_BUT_SUPPRESS_DETECTION will retain the bug but
suppress the error message; un-defining both EXPOSE_BUG and
KEEP_BUG_BUT_SUPPRESS_DETECTION will not trigger the bug.
Thanks,
--Suresh
*/
------------------------------------------------------------------------------
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