https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117101
Bug ID: 117101
Summary: internal compiler error: Segmentation fault for
operator new
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: yihan4845 at gmail dot com
Target Milestone: ---
Compiler Explorer: https://godbolt.org/z/hrooe5sn8
The following program:
```cpp
using size_t = decltype(sizeof(int));
void *operator new(size_t, void void **p) noexcept { return p; }
int x;
void f() {
int y;
new (&y) int(x);
}
```
will trigger segmentation fault for gcc trunk only.
The stack dump:
```
0x2854355 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x2868135 internal_error(char const*, ...)
???:0
0xbb4a2f build_new(unsigned int, vec<tree_node*, va_gc, vl_embed>**,
tree_node*, tree_node*, vec<tree_node*, va_gc, vl_embed>**, int, int)
???:0
0xc98d9a c_parse_file()
???:0
0xdf0959 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
```
