Current g++ produces an ICE when compiling the following code snippet: template <typename T> void foo(T &arg) { arg+=1; }
template <typename T> void foo(T &arg) { arg+=2; } template void foo(float &arg); ~/tmp>g++ -v bug.cc Using built-in specs. Target: i686-pc-linux-gnu Configured with: /scratch/gcc/configure --quiet --prefix=/afs/mpa/data/martin/ugcc --enable-languages=c++,f95 --enable-mapped-location --with-gmp=/afs/mpa/data/martin/mygmp Thread model: posix gcc version 4.1.0 20050711 (experimental) /afs/mpa/data/martin/ugcc/libexec/gcc/i686-pc-linux-gnu/4.1.0/cc1plus -quiet -v -D_GNU_SOURCE bug.cc -quiet -dumpbase bug.cc -mtune=pentiumpro -auxbase bug -version -o /tmp/cctt6fLt.s ignoring nonexistent directory "/afs/mpa/data/martin/ugcc/lib/gcc/i686-pc-linux-gnu/4.1.0/../../../../i686-pc-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /afs/mpa/data/martin/ugcc/lib/gcc/i686-pc-linux-gnu/4.1.0/../../../../include/c++/4.1.0 /afs/mpa/data/martin/ugcc/lib/gcc/i686-pc-linux-gnu/4.1.0/../../../../include/c++/4.1.0/i686-pc-linux-gnu /afs/mpa/data/martin/ugcc/lib/gcc/i686-pc-linux-gnu/4.1.0/../../../../include/c++/4.1.0/backward /usr/local/include /afs/mpa/data/martin/ugcc/include /afs/mpa/data/martin/ugcc/lib/gcc/i686-pc-linux-gnu/4.1.0/include /usr/include End of search list. GNU C++ version 4.1.0 20050711 (experimental) (i686-pc-linux-gnu) compiled by GNU C version 4.1.0 20050711 (experimental). GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Compiler executable checksum: 4d7d2981a00322530f4db8cbc706d5cf bug.cc:5:38: error: redefinition of 'template<class T> void foo(T&)' bug.cc:1:38: error: 'template<class T> void foo(T&)' previously declared here bug.cc:9:29: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. -- Summary: ICE in when instantiating a template function, for illegal code Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: martin at mpa-garching dot mpg dot de CC: gcc-bugs at gcc dot gnu dot org,martin at mpa-garching dot mpg dot de GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22405