I compiled ACE 5.4.2 with the actual snapshot and got an ICE. It does not occure with last week's snapshot. I occures at -O1 and above.
GCC was compiled with CFLAGS="-pipe -g -O3 -mcpu=G5 -maltivec -mabi=altivec - fmessage-length=0 -falign-loops=16 -falign-jumps=16 -falign-functions=32 - fstrict-aliasing -fsched-interblock -ffast-math -funroll-all-loops -funit-at-a- time -fpeel-loops -ftracer -funswitch-loops -floop-optimize2 -fmove-loop- invariants -fgcse-after-reload -frename-registers -fmodulo-sched --param max- gcse-passes=5 --param max-unrolled-insns=600 --param inline-unit-growth=300 -- param large-function-growth=400" Michael Cieslinski g++40 -pipe -O2 -c -o Concrete_Connection_Handlers.o Concrete_Connection_Handlers.ii -v Reading specs from /usr/local/gcc40b/lib/gcc/powerpc-unknown-linux- gnu/4.0.0/specs Configured with: ../gcc40/configure --prefix=/usr/local/gcc40b --program- suffix=40b --with-cpu=G5 --enable-altivec --enable-languages=c,c++ --enable- checking Thread model: posix gcc version 4.0.0 20041128 (experimental) /usr/local/gcc40b/libexec/gcc/powerpc-unknown-linux-gnu/4.0.0/cc1plus - fpreprocessed Concrete_Connection_Handlers.ii -quiet -dumpbase Concrete_Connection_Handlers.ii -mcpu=G5 -auxbase-strip Concrete_Connection_Handlers.o -O2 -version -o - | as -mpower4 -maltivec -many -V -Qy -o Concrete_Connection_Handlers.o - GNU assembler version 2.15.90 (ppc-redhat-linux) using BFD version 2.15.90 20040225 GNU C++ version 4.0.0 20041128 (experimental) (powerpc-unknown-linux-gnu) compiled by GNU C version 4.0.0 20041128 (experimental). GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Concrete_Connection_Handlers.cpp: In member function 'virtual int Thr_Supplier_Handler::svc()': Concrete_Connection_Handlers.cpp:759: internal compiler error: vector VEC (basic_block) push domain error, in insert_phi_nodes_for at tree-into-ssa.c:1049 Please submit a full bug report, with preprocessed source if appropriate. -- Summary: ICE: vector VEC(basic_block) push domain error, in insert_phi_nodes_for at tree-into-ssa.c:1049 Product: gcc Version: 4.0.0 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: powerpc-unknown-linux-gnu GCC host triplet: powerpc-unknown-linux-gnu GCC target triplet: powerpc-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18719