http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54837
Bug #: 54837 Summary: [4.8 Regression] lto bootstrap error: ICE in expand_debug_source_expr, at cfgexpand.c:3538 Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassig...@gcc.gnu.org ReportedBy: mar...@trippelsdorf.de With: ~/gcc/configure --disable-werror --disable-multilib --enable-languages=c,c++ --enable-checking=yes --with-build-config=lto-bootstrap I get: In file included from :36:0: /home/markus/gcc/gcc/vec.h: In member function ‘_ZN5vec_tIcE3popEPKcjS2_.local.27.constprop.53’: /home/markus/gcc/gcc/vec.h:810:1: internal compiler error: in expand_debug_source_expr, at cfgexpand.c:3538 vec_t<T>::pop (ALONE_VEC_CHECK_DECL) ^ 0x5755a8 expand_debug_source_expr /home/markus/gcc/gcc/cfgexpand.c:3537 0x575a78 expand_debug_locations /home/markus/gcc/gcc/cfgexpand.c:3622 0x578496 gimple_expand_cfg /home/markus/gcc/gcc/cfgexpand.c:4487 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. Reduced: markus@x4 gcc % cat test.ii struct A { int num_; }; template < typename T > struct B { T & pop (const char *); A prefix_; T vec_[]; }; char *a; B < int >*b; void fn1 (char *, const char *) __attribute__ ((__noreturn__)); template < typename T > T & B < T >::pop (const char *p1) { prefix_.num_ ? : (fn1 (a, p1), 0); return vec_[-prefix_.num_]; } int main () { b->pop (__FUNCTION__); b->pop (__FUNCTION__); b->pop (__FUNCTION__); } markus@x4 gcc % /var/tmp/gcc_build_dir/./prev-gcc/g++ -B/var/tmp/gcc_build_dir/./prev-gcc/ test.ii -nodefaultlibs -g -O2 -flto In file included from :1:0: test.ii: In member function ‘_ZN1BIiE3popEPKc.local.0.constprop.1’: test.ii:14:29: internal compiler error: in expand_debug_source_expr, at cfgexpand.c:3538 template < typename T > T & B < T >::pop (const char *p1) ^ 0x5755a8 expand_debug_source_expr /home/markus/gcc/gcc/cfgexpand.c:3537 0x575a78 expand_debug_locations /home/markus/gcc/gcc/cfgexpand.c:3622 0x578496 gimple_expand_cfg /home/markus/gcc/gcc/cfgexpand.c:4487 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report.