When I compile ACE 5.4.2 with the actual snapshot of gcc41 (gcc-4.1-20050410) I get an ICE:
g++41 -O2 -c -o .shobj/Synch_Invocation.o Synch_Invocation.ii Conflict s_4 and s_78 across an abnormal edge from BB40->BB43 Synch_Invocation.cpp: In member function 'TAO::Invocation_Status TAO::Synch_Twoway_Invocation::remote_twoway(ACE_Time_Value*)': Synch_Invocation.cpp:49: internal compiler error: SSA corruption Please submit a full bug report, with preprocessed source if appropriate. g++41 -v: Using built-in specs. Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.1-20050410/configure --prefix=/usr/local/gcc41g --program-suffix=41g --with-arch=opteron --enable-languages=c,c++ --enable-checking Thread model: posix gcc version 4.1.0 20050410 (experimental) This ICE doesn't occur at -O1 or with snapshot gcc-4.1-20050403. Michael Cieslinski -- Summary: ICE: SSA corruption compiling ACE542 with gcc41 Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: micis at gmx dot de CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: x86_64-unknown-linux-gnu GCC host triplet: x86_64-unknown-linux-gnu GCC target triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20944