I first encountered this problem with GCC 4.3.1. With that compiler, the program compiles fine (without warnings) but crashes at runtime. I tried a recent snapshot of version 4.4 before submitting a bug report, and there an internal compiler error is produced instead. So although this bug report is filed for 4.4, a similar bug is present in at least 4.3.1 (and probably others).
I don't really understand what causes the bug, so I'll just give you the source code for a (self-contained, simplified) test case that causes the internal compiler error along with my output, and hope you are able to figure it out. ;-) $ g++ -v Using built-in specs. Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.4-20080704/configure --prefix=/home/maks/gcc-4.4-20080704 Thread model: posix gcc version 4.4.0 20080704 (experimental) (GCC) $ g++ -c -Wall -Wextra bug.cpp bug.cpp: In function âvoid invoke() [with C = Foo, void (C::* M)() = method]â: bug.cpp:9: internal compiler error: in expand_expr_real_1, at expr.c:7279 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. -- Summary: Internal compiler error with template/pointer to member functions Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: maksverver at geocities 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=36776
