https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111818
Bug ID: 111818
Summary: GCC: 14: internal compiler error: tree check: expected
tree that contains 'decl common' structure, have
'integer_cst' in tree_could_trap_p, at tree-eh.cc:2733
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: ---
When compile below program with GCC-14 and option `-O1`, GCC-14 crashes:
```
#define DUMMY_VALUE 0x12345678
static void foo(const volatile unsigned int x, void *p) {
__builtin_memcpy(p, &x, sizeof x);
__builtin_memcpy(p, &x, sizeof x);
}
void bar(int type, void *number) {
switch (type) {
case 1: foo(DUMMY_VALUE, number); break;
case 7: foo(0, number); break;
case 8: foo(0, number); break;
case 9: foo(0, number); break;
}
}
```
The crash reproducer: https://godbolt.org/z/7sP8zc3Kc
And the full stack dump:
```
<source>: In function 'foo':
<source>:3:23: warning: passing argument 2 of '__builtin_memcpy' discards
'volatile' qualifier from pointer target type [-Wdiscarded-qualifiers]
3 | __builtin_memcpy(p, &x, sizeof x);
| ^~
<source>:3:23: note: expected 'const void *' but argument is of type 'const
volatile unsigned int *'
<source>:4:23: warning: passing argument 2 of '__builtin_memcpy' discards
'volatile' qualifier from pointer target type [-Wdiscarded-qualifiers]
4 | __builtin_memcpy(p, &x, sizeof x);
| ^~
<source>:4:23: note: expected 'const void *' but argument is of type 'const
volatile unsigned int *'
during RTL pass: expand
In function 'foo',
inlined from 'bar' at <source>:9:11:
<source>:3:3: internal compiler error: tree check: expected tree that contains
'decl common' structure, have 'integer_cst' in tree_could_trap_p, at
tree-eh.cc:2733
3 | __builtin_memcpy(p, &x, sizeof x);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x22ff3ee internal_error(char const*, ...)
???:0
0x8a8243 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
???:0
0xc9ab0e set_mem_attributes_minus_bitpos(rtx_def*, tree_node*, int,
poly_int<1u, long>)
???:0
0xcc6c35 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
???:0
0xcd3083 store_expr(tree_node*, rtx_def*, int, bool, bool)
???:0
0xcd4d66 expand_assignment(tree_node*, tree_node*, bool)
???: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.
```
