[PATCH] D53968: [LLD]fix windows mingw build with 'LLVM_LINK_LLVM_DYLIB' the lld will hang when exiting
Peiyuan Song via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Nov 1 16:41:24 PDT 2018
SquallATF added a comment.
This bug only in shared dll, static build does not trigger this bug Here is a issue <https://github.com/civetweb/civetweb/issues/264> with another project here that is very similar to this one.
I create a small test code to reproduce the bug. I have tried use clang, MSVC and gcc,I post MSVC build command here.
F7485180: cpptest.zip <https://reviews.llvm.org/F7485180>
bug build, test program will hang when exiting.
cl /EHsc /LD cppdll.cpp /Fecppdllcl.dll
cl cppexe.cpp /Fecppexecl.exe /link cppdllcl.lib
static build does not have this bug
cl /EHsc cppexe.cpp cppdll.cpp -DSTATIC /Fecppdllcls.exe
fix use `std::weak_ptr`, but `std::weak_ptr` is not a real singleton.
cl /EHsc /LD cppdll.cpp -DFIX /Fecppdllclfix.dll
cl cppexe.cpp /Fecppexeclfix.exe -DFIX /link cppdllclfix.lib
Repository:
rL LLVM
https://reviews.llvm.org/D53968
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