This seems to be a g++ bug. SInce g++ 4.9.1 has been released now I think we could wait a few days and see whether it happens on g++ 4.9.1 and if so, file a bug report to gcc developers.
Tip: when preparing a test case it is recommended to remove dependency on library headers since gcc and gcc libraries(here, libstdc++) are developed by different teams, and otherwise people might not be able to tell who went wrong. ------------------ Best regards, lh_mouse 2014-07-17 ------------------------------------------------------------- 发件人：Renaud Lepère <lepere.ren...@yahoo.com> 发送日期：2014-07-17 17:31 收件人：mingw-w64-public 抄送： 主题：[Mingw-w64-public] ICE with 4.9 on simple code (regression) I have installed a new version of mingw64 x86_64-4.9.0-posix-seh-rt_v3-rev2from Mingw-builds project But when I compile the code, i got an ICE. I am not sure where is the bug (gcc ?). I also tried the same code on http://gcc.godbolt.org/ with a 4.9.0 compiler but it was ok. The code is very simple so I am suprised. bug.cpp #include <tuple> #include <vector> typedef std::tuple<int, int > Element; typedef std::vector< Element > Elements; class Base { public: Base(const Elements & elements); ~Base(); }; Base::Base(const Elements & elements) { } g++ --std=c++11 bug.cpp cc1plus.exe: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://sourceforge.net/projects/mingw-w64> for instructions. If I define struct Element : public std::tuple<int, int > {}; or if I define the constructor inside the code it fixes the ICE but my code is valid. Is this the good place to report this bug or should I report it somewhere else ? Thanks for your help,
crashme.cpp
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