https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100525
Bug ID: 100525
Summary: ICE: tree check: expected class ‘type’, have
‘exceptional’ (error_mark) in
useless_type_conversion_p, at gimple-expr.c:87
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
__GIMPLE
foo() { __builtin_abs(a); }
$ gcc-trunk -O0 mutant.c
mutant.c:1:1: error: ‘__GIMPLE’ only valid with ‘-fgimple’
1 | __GIMPLE
| ^~~~~~~~
mutant.c:2:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
2 | foo() { __builtin_abs(a); }
| ^~~
mutant.c: In function ‘foo’:
mutant.c:2:23: error: ‘a’ undeclared (first use in this function)
2 | foo() { __builtin_abs(a); }
| ^
mutant.c:2:23: note: each undeclared identifier is reported only once for each
function it appears in
during GIMPLE pass: lower
mutant.c:2:1: internal compiler error: tree check: expected class ‘type’, have
‘exceptional’ (error_mark) in useless_type_conversion_p, at gimple-expr.c:87
2 | foo() { __builtin_abs(a); }
| ^~~
0x7bce07 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/tree.c:8724
0x6cb6de tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/tree.h:3479
0x6cb6de useless_type_conversion_p(tree_node*, tree_node*)
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-expr.c:87
0xbe57da gimple_builtin_call_types_compatible_p(gimple const*, tree_node*)
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple.c:2723
0x19177b5 lower_stmt
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-low.c:387
0x19177b5 lower_sequence
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-low.c:217
0x191766d lower_gimple_bind
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-low.c:473
0x191852d lower_function_body
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-low.c:110
0x191852d execute
/tmp/tmp.FUbEknNORK-gcc-builder/gcc/gcc/gimple-low.c:195
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
