https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126497
Drea Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2026-07-30
Component|tree-optimization |middle-end
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Known to fail| |14.1.0
--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
(gdb) p debug_tree(*expr_p)
<parm_decl 0x7ffff7810aa0 a
type <bitint_type 0x7ffff79c92a0 U sizes-gimplified public unsigned QI
size <integer_cst 0x7ffff781f090 constant 8>
unit-size <integer_cst 0x7ffff781f0a8 constant 1>
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff79c9150 precision:1 min <integer_cst 0x7ffff79dc4e0 0> max <integer_cst
0x7ffff79dc4f8 1>>
used unsigned read QI t1.c:4:9 size <integer_cst 0x7ffff781f090 8>
unit-size <integer_cst 0x7ffff781f0a8 1>
align:8 warn_if_not_align:0 context <function_decl 0x7ffff79d8100 ge>
arg-type <bitint_type 0x7ffff79c92a0 U>>
$2 = void
[apinski@xeond2 gcc]$ ../stage1-gcc/cc1 t1.c
ge
Analyzing compilation unit
t1.c: In function ‘ge’:
t1.c:4:25: internal compiler error: in recalculate_side_effects, at
gimplify.cc:3368
4 | U ge (U a) { U t; t = a >= 1; return t; } /* ICE */
| ~~^~~~
0x3a8325a internal_error(char const*, ...)
/home/apinski/src/upstream-gcc-new/gcc/gcc/diagnostic-global-context.cc:787
0x3a91b6b fancy_abort(char const*, int, char const*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/diagnostics/context.cc:1813
0x156cb43 recalculate_side_effects
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:3368
0x15bba6f gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:21367
0x157b85e gimplify_modify_expr
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:7327
0x15b861d gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:20509
0x1580842 gimplify_stmt(tree_node**, gimple**)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:8570
0x15690c8 gimplify_statement_list
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:2166
0x15ba500 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:20960
0x1580842 gimplify_stmt(tree_node**, gimple**)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:8570
0x1566cd0 gimplify_bind_expr
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:1561
0x15b93a0 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:20710
0x1580842 gimplify_stmt(tree_node**, gimple**)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:8570
0x15bd472 gimplify_body(tree_node*, bool)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:21816
0x15bddc7 gimplify_function_tree(tree_node*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/gimplify.cc:22025
0x12b2fb5 cgraph_node::analyze()
/home/apinski/src/upstream-gcc-new/gcc/gcc/cgraphunit.cc:691
0x12b53b6 analyze_functions
/home/apinski/src/upstream-gcc-new/gcc/gcc/cgraphunit.cc:1270
0x12b8934 symbol_table::finalize_compilation_unit()
/home/apinski/src/upstream-gcc-new/gcc/gcc/cgraphunit.cc:2593
../stage1-gcc/cc1 t1.c
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
We are gimplifying:
t = a != 0;
into just `t = a;` and then call recalculate_side_effects on the `a`.
