http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46670
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-11-26 15:46:03 UTC --- [...@gnu-35 delta]$ cat testcase.cc extern unsigned char __TBB_ReverseByte(unsigned char src); extern unsigned char *reversed; template<typename T> T __TBB_ReverseBits(T src) { unsigned char *original = (unsigned char *) &src; for( int i = sizeof(T)-1; i--; ) reversed[i] = __TBB_ReverseByte( original[sizeof(T)-i-1] ); } [...@gnu-35 delta]$ /export/gnu/import/rrs/166167/usr/bin/gcc -std=c++0x -S testcase.cc testcase.cc: In function \u2018T __TBB_ReverseBits(T)\u2019: testcase.cc:7:62: internal compiler error: in dependent_type_p, at cp/pt.c:17553 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. [...@gnu-35 delta]$