[Bug tree-optimization/80079] [7 Regression] Conditional jump or move depends on uninitialised value(s): gimple-ssa-store-merging.c:768

["trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80079

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
or:

==6305==ERROR: AddressSanitizer: SEGV on unknown address 0x17d7d9d7d7d7d7da (pc
0x0000134b7cc0 bp 0xbebebebebebebebe sp 0x3fffd0e4aec0 T0)
==6305==The signal is caused by a UNKNOWN memory access.
    #1 0x134bec60 in execute ../../gcc/gcc/gimple-ssa-store-merging.c:1514
    #2 0x1172f160 in execute_one_pass(opt_pass*) ../../gcc/gcc/passes.c:2465
    #3 0x1173128c in execute_pass_list_1 ../../gcc/gcc/passes.c:2554
    #4 0x117312bc in execute_pass_list_1 ../../gcc/gcc/passes.c:2555
    #5 0x11731398 in execute_pass_list(function*, opt_pass*)
../../gcc/gcc/passes.c:2565
    #2 0x1172f160 in execute_one_pass(opt_pass*) ../../gcc/gcc/passes.c:2465
    #3 0x1173128c in execute_pass_list_1 ../../gcc/gcc/passes.c:2554
    #4 0x117312bc in execute_pass_list_1 ../../gcc/gcc/passes.c:2555
    #5 0x11731398 in execute_pass_list(function*, opt_pass*)
../../gcc/gcc/passes.c:2565
    #6 0x10a0cd24 in cgraph_node::expand() ../../gcc/gcc/cgraphunit.c:2038
    #7 0x10a12738 in expand_all_functions ../../gcc/gcc/cgraphunit.c:2174
    #8 0x10a12738 in symbol_table::compile() ../../gcc/gcc/cgraphunit.c:2531
    #9 0x10a1c0d8 in symbol_table::compile() ../../gcc/gcc/cgraphunit.c:2591
    #10 0x10a1c0d8 in symbol_table::finalize_compilation_unit()
../../gcc/gcc/cgraphunit.c:2621
    #6 0x10a0cd24 in cgraph_node::expand() ../../gcc/gcc/cgraphunit.c:2038
    #11 0x11ad8ff8 in compile_file ../../gcc/gcc/toplev.c:492
    #7 0x10a12738 in expand_all_functions ../../gcc/gcc/cgraphunit.c:2174
    #12 0x10225e34 in do_compile ../../gcc/gcc/toplev.c:2000
    #8 0x10a12738 in symbol_table::compile() ../../gcc/gcc/cgraphunit.c:2531
    #13 0x10225e34 in toplev::main(int, char**) ../../gcc/gcc/toplev.c:2134
    #9 0x10a1c0d8 in symbol_table::compile() ../../gcc/gcc/cgraphunit.c:2591
    #10 0x10a1c0d8 in symbol_table::finalize_compilation_unit()
../../gcc/gcc/cgraphunit.c:2621
    #14 0x10233994 in main ../../gcc/gcc/main.c:39
    #15 0x3fffb40946fc in generic_start_main.isra.0 (/lib64/libc.so.6+0x246fc)