https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97830
Bug ID: 97830 Summary: [11 Regression] ICE in expressions_equal_p at gcc/tree-ssa-sccvn.c:5631 since r11-4982-g4d6b8d4213376e8a Product: gcc Version: 11.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: rguenth at gcc dot gnu.org Target Milestone: --- The following fails: $ cat schedule.i typedef enum { LangC } cLanguage; typedef enum { FunctionOneArg, FunctionStandard } cFunctionType; void *CCTK_CallFunction_function; cLanguage CCTK_CallFunction_fdata_0; cFunctionType CCTK_CallFunction_fdata_1; void CCTK_CallFunction_data() { void (*standardfunc)(); int (*oneargfunc)(); switch (CCTK_CallFunction_fdata_1) { case FunctionOneArg: oneargfunc = CCTK_CallFunction_function; oneargfunc(CCTK_CallFunction_data); break; case FunctionStandard: switch (CCTK_CallFunction_fdata_0) { case LangC: standardfunc = CCTK_CallFunction_function; standardfunc(CCTK_CallFunction_data); } } } $ gcc schedule.i -c -O2 during GIMPLE pass: pre schedule.i: In function 'CCTK_CallFunction_data': schedule.i:6:6: internal compiler error: Segmentation fault 6 | void CCTK_CallFunction_data() { | ^~~~~~~~~~~~~~~~~~~~~~ 0x13be442 crash_signal /home/marxin/Programming/gcc/gcc/toplev.c:330 0x7ffff7889d1f ??? /usr/src/debug/glibc-2.32-2.1.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0 0x16badca expressions_equal_p(tree_node*, tree_node*) /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:5631 0x16a9f5f vn_reference_eq(vn_reference_s const*, vn_reference_s const*) /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:705 0x16c5e86 vn_reference_hasher::equal(vn_reference_s const*, vn_reference_s const*) /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:246 0x16c6c45 hash_table<vn_reference_hasher, false, xcallocator>::find_slot_with_hash(vn_reference_s* const&, unsigned int, insert_option) /home/marxin/Programming/gcc/gcc/hash-table.h:981 0x16ad9fa vn_reference_lookup_1 /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:1645 0x16b4137 vn_reference_lookup_call(gcall*, vn_reference_s**, vn_reference_s*) /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:3579 0x16b8a1f visit_reference_op_call /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:4897 0x16ba84c visit_stmt /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:5503 0x16c08d2 process_bb /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:7110 0x16c29bc do_rpo_vn /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:7597 0x16bf041 run_rpo_vn(vn_lookup_kind) /home/marxin/Programming/gcc/gcc/tree-ssa-sccvn.c:6684 0x1677f18 execute /home/marxin/Programming/gcc/gcc/tree-ssa-pre.c:4392 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.