https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103230
Bug ID: 103230
Summary: ipa-modref-tree.h:550:33: runtime error: load of value
255, which is not a valid value for type 'bool'
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: hubicka at gcc dot gnu.org, marxin at gcc dot gnu.org
Blocks: 63426
Target Milestone: ---
Happens with UBSAN compiler for:
$ gcc gcc/testsuite/gcc.c-torture/execute/pr71494.c -O1 -flto
...
/home/marxin/Programming/gcc/gcc/ipa-modref-tree.h:550:33: runtime error: load
of value 255, which is not a valid value for type 'bool'
#0 0x18acc38 in modref_tree<tree_node*>::merge(modref_tree<tree_node*>*,
vec<modref_parm_map, va_heap, vl_ptr>*, modref_parm_map*, bool)
/home/marxin/Programming/gcc/gcc/ipa-modref-tree.h:550
#1 0x188452c in modref_propagate_in_scc
/home/marxin/Programming/gcc/gcc/ipa-modref.c:4385
#2 0x188a2b7 in execute /home/marxin/Programming/gcc/gcc/ipa-modref.c:4932
#3 0x1f513bc in execute_one_pass(opt_pass*)
/home/marxin/Programming/gcc/gcc/passes.c:2567
#4 0x1f54a44 in execute_ipa_pass_list(opt_pass*)
/home/marxin/Programming/gcc/gcc/passes.c:2996
#5 0xb3bd3c in do_whole_program_analysis
/home/marxin/Programming/gcc/gcc/lto/lto.c:469
#6 0xb3c538 in lto_main() /home/marxin/Programming/gcc/gcc/lto/lto.c:637
#7 0x2417b3b in compile_file /home/marxin/Programming/gcc/gcc/toplev.c:452
#8 0x2422188 in do_compile /home/marxin/Programming/gcc/gcc/toplev.c:2156
#9 0x2422c03 in toplev::main(int, char**)
/home/marxin/Programming/gcc/gcc/toplev.c:2308
#10 0x6edfd90 in main /home/marxin/Programming/gcc/gcc/main.c:39
#11 0x7ffff6f1453f in __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
#12 0x7ffff6f145eb in __libc_start_main_impl ../csu/libc-start.c:409
#13 0xaa3b74 in _start (/dev/shm/objdir2/gcc/lto1+0xaa3b74)
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63426
[Bug 63426] [meta-bug] Issues found with -fsanitize=undefined
