I get an ICE when compiling this code using GCC 4.4 from svn: template <class I> class TestClass { public: struct Subclass { struct { int c() {return 0;} } b; }; void test(); }; template <class I> void TestClass<I>::test() { Subclass a; int d[a.b.c()]; } int main() { TestClass<char> that; that.test(); }
goff...@asplode tmp % g++ -v testcase.cpp -o testcase --save-temps Using built-in specs. Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.4.1_pre9999/work/gcc-4.4.1-9999/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.4.1-pre9999 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.1-pre9999 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.1-pre9999/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.1-pre9999/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --enable-multilib --enable-libmudflap --disable-libssp --enable-libgomp --enable-cld --disable-libgcj --enable-languages=c,c++,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo SVN' --with-ppl --with-cloog Thread model: posix gcc version 4.4.1-pre9999 built 20090502 (prerelease) rev. 147067 (Gentoo SVN) COLLECT_GCC_OPTIONS='-v' '-o' 'testcase' '-save-temps' '-shared-libgcc' '-mtune=generic' /usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/cc1plus -E -quiet -v -D_GNU_SOURCE testcase.cpp -mtune=generic -fpch-preprocess -o testcase.ii ignoring nonexistent directory "/usr/local/include" ignoring nonexistent directory "/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/../../../../x86_64-pc-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/include/g++-v4 /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/include/g++-v4/x86_64-pc-linux-gnu /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/include/g++-v4/backward /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/include /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/include-fixed /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-o' 'testcase' '-save-temps' '-shared-libgcc' '-mtune=generic' /usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.1-pre9999/cc1plus -fpreprocessed testcase.ii -quiet -dumpbase testcase.cpp -mtune=generic -auxbase testcase -version -o testcase.s GNU C++ (Gentoo SVN) version 4.4.1-pre9999 built 20090502 (prerelease) rev. 147067 (x86_64-pc-linux-gnu) compiled by GNU C version 4.4.1-pre9999 built 20090502 (prerelease) rev. 147067, GMP version 4.3.0, MPFR version 2.4.1-p5. GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=128109 Compiler executable checksum: 0168ca3d6bfe22e6160ea49ab7a5ec7b testcase.cpp: In member function âvoid TestClass<I>::test() [with I = char]â: testcase.cpp:12: instantiated from here testcase.cpp:8: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://bugs.gentoo.org/> for instructions. It works fine with Gentoo's GCC 4.3.3-r2. I don't know if their patches affect this, though. This causes Dillo to fail to compile on its "dw/fltkui.cc". -- Summary: [4.4 regression] ICE when creating a local array with size from the return value of a member function of an object in a nested class in a template class Product: gcc Version: 4.4.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: goffrie at gmail dot com GCC build triplet: x86_64-pc-linux-gnu GCC host triplet: x86_64-pc-linux-gnu GCC target triplet: x86_64-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40013