BOOST_STACKTRACE_USE_WINDBG_CACHED does not work with MinGW

[githubuser0xFFFF]

We use the MinGW toolchain that ships with the Qt Libraries. This is the output of gcc -v

Thread model: posix
gcc version 5.3.0 (i686-posix-dwarf-rev0, Built by MinGW-W64 project)

Using BOOST_STACKTRACE_USE_WINDBG_CACHED results in the following compiler error:

../boost/stacktrace/detail/frame_msvc.ipp(167): fatal error C1189: #error: Your compiler does not support C++11 thread_local storage. It's impossible to build with BOOST_STACKTRACE_USE_WINDBG_CACHED.

These are the compiller settings:

 -O0 -g3 -Wall -c -fmessage-length=0 -std=c++14

[apolukhin]

Yes, that's a known behaviour. What change are you requesting?

[apolukhin]

Tried to reflect that behaviour in docs in 8ab572d. Is it OK now? You can see the changes here

[githubuser0xFFFF]

Sorry, if I misunderstand something, but the documentation says:

MinGW-w64 users may use the BOOST_STACKTRACE_USE_WINDBG and BOOST_STACKTRACE_USE_WINDBG_CACHED for getting the best results.

But I use a MinGW-w64 compiler and BOOST_STACKTRACE_USE_WINDBG_CACHED does not even compile. Have I overlooked something or do I have the wrong compiler?

[apolukhin]

OK, I've reproduced the issue locally. The issue is related to this comment https://sourceforge.net/p/mingw-w64/bugs/527/#6b1a

In other words, thread_local depends on MinGW build. Just dropped the MinGW* mentions in BOOST_STACKTRACE_USE_WINDBG_CACHED description.

See updated docs here

[apolukhin]

Merged the docs to master