https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103435
Bug ID: 103435
Summary: gcc/gimple-ssa-store-merging.c:879:13: runtime error:
shift exponent 64 is too large for 64-bit type 'long
unsigned int'
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Blocks: 63426
Target Milestone: ---
The following triggers an UBSAN:
$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/execute/pr103376.c -c
-O2
/home/marxin/Programming/gcc/gcc/gimple-ssa-store-merging.c:879:13: runtime
error: shift exponent 64 is too large for 64-bit type 'long unsigned int'
#0 0x6bd87c2 in find_bswap_or_nop_finalize
/home/marxin/Programming/gcc/gcc/gimple-ssa-store-merging.c:879
#1 0x6bd96aa in find_bswap_or_nop
/home/marxin/Programming/gcc/gcc/gimple-ssa-store-merging.c:981
#2 0x6bdde47 in execute
/home/marxin/Programming/gcc/gcc/gimple-ssa-store-merging.c:1538
#3 0x22d26de in execute_one_pass(opt_pass*)
/home/marxin/Programming/gcc/gcc/passes.c:2567
#4 0x22d31da in execute_pass_list_1
/home/marxin/Programming/gcc/gcc/passes.c:2656
#5 0x22d32a3 in execute_pass_list_1
/home/marxin/Programming/gcc/gcc/passes.c:2657
#6 0x22d335d in execute_pass_list(function*, opt_pass*)
/home/marxin/Programming/gcc/gcc/passes.c:2667
#7 0x1228bba in cgraph_node::expand()
/home/marxin/Programming/gcc/gcc/cgraphunit.c:1834
#8 0x122a7a2 in expand_all_functions
/home/marxin/Programming/gcc/gcc/cgraphunit.c:1998
#9 0x122cce6 in symbol_table::compile()
/home/marxin/Programming/gcc/gcc/cgraphunit.c:2348
#10 0x122d824 in symbol_table::finalize_compilation_unit()
/home/marxin/Programming/gcc/gcc/cgraphunit.c:2529
#11 0x27bc935 in compile_file /home/marxin/Programming/gcc/gcc/toplev.c:479
#12 0x27c6da6 in do_compile /home/marxin/Programming/gcc/gcc/toplev.c:2156
#13 0x27c7821 in toplev::main(int, char**)
/home/marxin/Programming/gcc/gcc/toplev.c:2308
#14 0x7332fb1 in main /home/marxin/Programming/gcc/gcc/main.c:39
#15 0x7ffff6ef85bf in __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
#16 0x7ffff6ef867b in __libc_start_main_impl ../csu/libc-start.c:409
#17 0xabf1e4 in _start (/dev/shm/objdir2/gcc/cc1+0xabf1e4)
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63426
[Bug 63426] [meta-bug] Issues found with -fsanitize=undefined
