https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85431
Bug ID: 85431
Summary: UBSAN: ../../gcc/dse.c:303:15: runtime error: shift
exponent 64 is too large for 64-bit type 'long
unsigned int'
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: rsandifo at gcc dot gnu.org
Target Milestone: ---
Following causes UBSAN:
$ UBSAN_OPTIONS="print_stacktrace=1" ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/torture/pr85022.c -c -O
../../gcc/dse.c:303:15: runtime error: shift exponent 64 is too large for
64-bit type 'long unsigned int'
#0 0x2ecd348 in lowpart_bitmask ../../gcc/dse.c:303
#1 0x2ed2512 in record_store ../../gcc/dse.c:1649
#2 0x2ed89d4 in scan_insn ../../gcc/dse.c:2542
#3 0x2ed9251 in dse_step1 ../../gcc/dse.c:2657
#4 0x2eded20 in rest_of_handle_dse ../../gcc/dse.c:3574
#5 0x2edef5c in execute ../../gcc/dse.c:3632
#6 0x15a1a8b in execute_one_pass(opt_pass*) ../../gcc/passes.c:2497
#7 0x15a2255 in execute_pass_list_1 ../../gcc/passes.c:2586
#8 0x15a22cc in execute_pass_list_1 ../../gcc/passes.c:2587
#9 0x15a234c in execute_pass_list(function*, opt_pass*)
../../gcc/passes.c:2597
#10 0xc44bc3 in cgraph_node::expand() ../../gcc/cgraphunit.c:2139
#11 0xc45ad0 in expand_all_functions ../../gcc/cgraphunit.c:2275
#12 0xc47448 in symbol_table::compile() ../../gcc/cgraphunit.c:2624
#13 0xc479c9 in symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2717
#14 0x18b1667 in compile_file ../../gcc/toplev.c:480
#15 0x18b5448 in do_compile ../../gcc/toplev.c:2132
#16 0x18b592c in toplev::main(int, char**) ../../gcc/toplev.c:2267
#17 0x320b531 in main ../../gcc/main.c:39
#18 0x7ffff5ca9a86 in __libc_start_main (/lib64/libc.so.6+0x21a86)
#19 0x8210c9 in _start
(/home/marxin/Programming/gcc/objdir2/gcc/cc1+0x8210c9)
