https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110575
Bug ID: 110575
Summary: gcc: internal compiler error: tree check: expected
class 'type', have 'exceptional' (error_mark) in
build_aligned_type
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: 141242068 at smail dot nju.edu.cn
Target Milestone: ---
The testcase:
```
void __GIMPLE(ssa, startwith("slp")) bar() {
a = __MEM<v16si, 32>((int *restrict)b(c));
}
```
When attempting to compile this program using `gcc-14` with option `-O0`, gcc
reports internal compiler error as below:
```
<source>:1:6: error: '__GIMPLE' only valid with '-fgimple'
1 | void __GIMPLE(ssa, startwith("slp")) bar() {
| ^~~~~~~~
<source>: In function 'bar':
<source>:2:3: error: 'a' undeclared (first use in this function)
2 | a = __MEM<v16si, 32>((int *restrict)b(c));
| ^
<source>:2:3: note: each undeclared identifier is reported only once for each
function it appears in
<source>:2:13: error: unknown type name 'v16si'
2 | a = __MEM<v16si, 32>((int *restrict)b(c));
| ^~~~~
<source>:2:3: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in build_aligned_type, at tree.cc:5700
2 | a = __MEM<v16si, 32>((int *restrict)b(c));
| ^
0x213983e internal_error(char const*, ...)
???:0
0x8959fe tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
???:0
0xa7aeae c_parser_parse_gimple_body(c_parser*, char*, c_declspec_il,
profile_count)
???:0
0xa71add c_parse_file()
???:0
0xae1149 c_common_parse_file()
???:0
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.
Compiler returned: 1
```
This behavior can be verified by visiting the CompilerExplorer:
https://gcc.godbolt.org/z/8d8GGaPze
