http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57770
Bug ID: 57770 Summary: non-static data member initializer in nested class and default value in constructor cause compiler segmentation fault Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: adam at mizerski dot pl When compiling this: struct A { struct B { int i = 0; }; B b; A(const B& _b = B()) : b(_b) {} }; with this command: g++ -std=c++11 -c test.cpp this happens: test_cpp.cpp: In constructor 'constexpr A::B::B()': test_cpp.cpp:36:12: internal compiler error: Segmentation fault with this system: gcc -v output: Using built-in specs. COLLECT_GCC=/usr/bin/gcc COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.7/lto-wrapper Target: x86_64-suse-linux Configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64 --enable-languages=c,c++,objc,fortran,obj-c++,java,ada --enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.7 --enable-ssp --disable-libssp --disable-libitm --disable-plugin --with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' --disable-libgcj --disable-libmudflap --with-slibdir=/lib64 --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch --enable-version-specific-runtime-libs --enable-linker-build-id --program-suffix=-4.7 --enable-linux-futex --without-system-libunwind --with-arch-32=i586 --with-tune=generic --build=x86_64-suse-linux Thread model: posix gcc version 4.7.2 20130108 [gcc-4_7-branch revision 195012] (SUSE Linux) uname -a output: Linux etam-laptop.lan 3.7.10-1.16-desktop #1 SMP PREEMPT Fri May 31 20:21:23 UTC 2013 (97c14ba) x86_64 x86_64 x86_64 GNU/Linux Above specification is default openSUSE 12.3. I could reproduce this bug also on openSUSE 12.2 and Fedora 18. Additional notes: struct A { struct B { int i; constexpr B() : i(0) {} }; B b; A(const B& _b = B()) : b(_b) {} }; and struct A { struct B { int i = 0; }; B b; A(const B& _b) : b(_b) {} }; compiles fine.