[Bug c/100542] New: ICE: segmentation fault, at is_gimple_variable, gimple-expr.h:84

[cnsun at uwaterloo dot ca]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100542

            Bug ID: 100542
           Summary: ICE: segmentation fault, at is_gimple_variable,
                    gimple-expr.h:84
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: cnsun at uwaterloo dot ca
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.FUbEknNORK-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210511 (experimental) [master revision
:7db32cac8:aa891c56f25baac94db004e309d1b6e40b770a95] (GCC)

$ cat mutant.c
ldt_add_entry()
{
__asm__ ( "" : : "m" ( ( { } ) ) ) ;
}

$ gcc-trunk  mutant.c
mutant.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
    1 | ldt_add_entry()
      | ^~~~~~~~~~~~~
mutant.c: In function ‘ldt_add_entry’:
mutant.c:3:26: internal compiler error: Segmentation fault
    3 | __asm__ ( "" : : "m" ( ( { } ) ) ) ;
      |                        ~~^~~~~
0xef7273 crash_signal
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/toplev.c:327
0xbeacd4 is_gimple_variable
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-expr.h:84
0xbeacd4 is_gimple_id
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-expr.h:95
0xbeacd4 is_gimple_addressable
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-expr.h:122
0xbeacd4 is_gimple_lvalue(tree_node*)
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-expr.c:595
0xc273cd gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:15038
0xc30a1d gimplify_asm_expr
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:6506
0xc26705 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:14416
0xc28f6a gimplify_stmt(tree_node**, gimple**)
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:6877
0xc2979e gimplify_bind_expr
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:1421
0xc259d3 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:14284
0xc28f6a gimplify_stmt(tree_node**, gimple**)
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:6877
0xc2a563 gimplify_body(tree_node*, bool)
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:15328
0xc2a9b1 gimplify_function_tree(tree_node*)
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimplify.c:15482
0xa7e707 cgraph_node::analyze()
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/cgraphunit.c:670
0xa81611 analyze_functions
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/cgraphunit.c:1234
0xa820e1 symbol_table::finalize_compilation_unit()
        /tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/cgraphunit.c:2508
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with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
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