[Bug lto/62026] [5 Regression] Crash in lto_get_decl_name_mapping

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62026

--- Comment #19 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Program received signal SIGSEGV, Segmentation fault.
lto_get_decl_name_mapping (decl_data=0x0, name=0x3fffaf6d4580 "_ZZ3fn1vE1b") at
../../gcc/gcc/lto-section-in.c:340
340     ../../gcc/gcc/lto-section-in.c: No such file or directory.
(gdb) bt
#0  lto_get_decl_name_mapping (decl_data=0x0, name=0x3fffaf6d4580
"_ZZ3fn1vE1b") at ../../gcc/gcc/lto-section-in.c:340
#1  0x000000001098f448 in get_constructor (this=0x3fffaf890080) at
../../gcc/gcc/varpool.c:280
#2  varpool_node::get_constructor (this=0x3fffaf890080) at
../../gcc/gcc/varpool.c:264
#3  0x0000000010981c50 in get_variable_section (decl=0x3fffaf7003f0,
prefer_noswitch_p=<optimized out>) at ../../gcc/gcc/varasm.c:1121
#4  0x0000000010983ae4 in get_block_for_decl (decl=decl@entry=0x3fffaf7003f0)
at ../../gcc/gcc/varasm.c:1194
#5  0x000000001098663c in make_decl_rtl (decl=0x3fffaf7003f0) at
../../gcc/gcc/varasm.c:1419
#6  0x0000000010989f44 in make_decl_rtl_for_debug (decl=0x3fffaf7003f0) at
../../gcc/gcc/varasm.c:1467
#7  0x00000000102523f8 in rtl_for_decl_location
(decl=decl@entry=0x3fffaf7003f0) at ../../gcc/gcc/dwarf2out.c:15760
#8  0x00000000102871e8 in loc_list_from_tree (loc=loc@entry=0x3fffaf7003f0,
want_address=<optimized out>) at ../../gcc/gcc/dwarf2out.c:14391
#9  0x000000001028dc14 in add_location_or_const_value_attribute
(attr=DW_AT_location, cache_p=<optimized out>, decl=0x3fffaf7003f0,
die=0x3fffaf880230)
    at ../../gcc/gcc/dwarf2out.c:15892
#10 add_location_or_const_value_attribute (die=0x3fffaf880230,
decl=0x3fffaf7003f0, cache_p=cache_p@entry=false, attr=DW_AT_location) at
../../gcc/gcc/dwarf2out.c:15836
#11 0x0000000010297708 in dwarf2out_finish (filename=0x112f2440
"/home/trippels/tmp/ccZV1IhN.ltrans0.o") at ../../gcc/gcc/dwarf2out.c:24243
#12 0x000000001063dd80 in compile_file () at ../../gcc/gcc/toplev.c:602
#13 0x0000000010640844 in do_compile () at ../../gcc/gcc/toplev.c:1973
#14 toplev_main (argc=22, argv=0x112f2860) at ../../gcc/gcc/toplev.c:2049
#15 0x0000000010101730 in main (argc=<optimized out>, argv=<optimized out>) at
../../gcc/gcc/main.c:36
(gdb) up
#1  0x000000001098f448 in get_constructor (this=0x3fffaf890080) at
../../gcc/gcc/varpool.c:280
280     ../../gcc/gcc/varpool.c: No such file or directory.
(gdb) up
#2  varpool_node::get_constructor (this=0x3fffaf890080) at
../../gcc/gcc/varpool.c:264
264     in ../../gcc/gcc/varpool.c
(gdb) up
#3  0x0000000010981c50 in get_variable_section (decl=0x3fffaf7003f0,
prefer_noswitch_p=<optimized out>) at ../../gcc/gcc/varasm.c:1121
1121    ../../gcc/gcc/varasm.c: No such file or directory.
(gdb) p debug_tree(decl)
 <var_decl 0x3fffaf7003f0 b
    type <integer_type 0x3fffaf6b07e0 int asm_written public SI
        size <integer_cst 0x3fffaf681380 constant 32>
        unit size <integer_cst 0x3fffaf681398 constant 4>
        align 32 symtab 16383 alias set -1 canonical type 0x3fffaf6b07e0
precision 32 min <integer_cst 0x3fffaf681338 -2147483648> max <integer_cst
0x3fffaf681350 2147483647>
        pointer_to_this <pointer_type 0x3fffaf6b1848>>
    static SI file timezone.ii line 9 col 14 size <integer_cst 0x3fffaf681380
32> unit size <integer_cst 0x3fffaf681398 4>
    align 32 context <function_decl 0x3fffaf843018 fn1> initial <error_mark
0x3fffaf681128>>
$1 = void