I'm seeing the following segfault with current trunk. This also happens with trunk from 20070720, but compiles fine with trunk from 20070616.
(sid)25752:[EMAIL PROTECTED]: ~] /usr/lib/gcc-snapshot/bin/gcc -c -O3 freecell-solver-state.c freecell-solver-state.c: In function 'freecell_solver_canonize_state': freecell-solver-state.c:21: 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. (gdb) run -O3 ~/freecell-solver-state.c Starting program: /home/tbm/tmp/gcc/gcc-4.3-20070821-r127666/gcc/cc1 -O3 ~/freecell-solver-state.c fcs_card_compare freecell_solver_canonize_state Analyzing compilation unit Performing interprocedural optimizations <visibility> <early_local_cleanups> <inline> <static-var> <pure-const> <type-escape-var>Assembling fu nctions: fcs_card_compare freecell_solver_canonize_state Program received signal SIGSEGV, Segmentation fault. build_classic_dist_vector_1 (ddr=0xf324c0, ddr_a=0xf3cb40, ddr_b=0xf57c60, dist_v=0x2af788c2fd00, init_b=0x7fff2292be57 "[EMAIL PROTECTED]", index_carry=0x7fff2292be50) at gcc/tree-data-ref.c:2717 2717 if (chrec_contains_undetermined (SUB_DISTANCE (subscript))) (gdb) where #0 build_classic_dist_vector_1 (ddr=0xf324c0, ddr_a=0xf3cb40, ddr_b=0xf57c60, dist_v=0x2af788c2fd00, init_b=0x7fff2292be57 "[EMAIL PROTECTED]", index_carry=0x7fff2292be50) at gcc/tree-data-ref.c:2717 #1 0x00000000006d0230 in subscript_dependence_tester (ddr=0xf324c0, loop_nest=0x2af788d28140) at gcc/tree-data-ref.c:3019 #2 0x00000000006d13fc in compute_all_dependences (datarefs=0xf2e1e0, dependence_relations=0x7fff2292c158, loop_nest=0xf2e2b0, compute_self_and_rr=1 '\001') at gcc/tree-data-ref.c:3827 #3 0x00000000006d207c in compute_data_dependences_for_loop (loop=0x2af788d28140, compute_self_and_read_read_dependences=1 '\001', datarefs=0x7fff2292c160, dependence_relations=0x7fff2292c158) at gcc/tree-data-ref.c:4139 #4 0x0000000000a42ec0 in tree_predictive_commoning () at gcc/tree-predcom.c:2487 #5 0x000000000077be37 in run_tree_predictive_commoning () at gcc/tree-ssa-loop.c:183 #6 0x0000000000629227 in execute_one_pass (pass=0xe87940) at gcc/passes.c:1108 #7 0x00000000006293ec in execute_pass_list (pass=0xe87940) at gcc/passes.c:1161 #8 0x00000000006293fe in execute_pass_list (pass=0xe877c0) at gcc/passes.c:1162 #9 0x00000000006293fe in execute_pass_list (pass=0xe86c20) at gcc/passes.c:1162 #10 0x00000000006fd2bf in tree_rest_of_compilation (fndecl=0x2af788d0cd00) at gcc/tree-optimize.c:405 #11 0x00000000008656c0 in cgraph_expand_function (node=0x2af788d0ce00) at gcc/cgraphunit.c:1077 #12 0x0000000000866ea5 in cgraph_optimize () at gcc/cgraphunit.c:1146 #13 0x0000000000414af0 in c_write_global_declarations () at gcc/c-decl.c:8072 #14 0x00000000006a30f3 in toplev_main (argc=<value optimized out>, argv=<value optimized out>) at gcc/toplev.c:1058 #15 0x00002af788831b44 in __libc_start_main () from /lib/libc.so.6 #16 0x0000000000404449 in _start () (gdb) -- Summary: [4.3 Regression] Segfault in build_classic_dist_vector_1 in gcc/tree-data-ref.c Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: tbm at cyrius dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33137
