https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123339
Bug ID: 123339
Summary: ICE: Segmentation fault in preprocessor with malformed
__has_include syntax <"foo"
Product: gcc
Version: 15.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: 522024330006 at smail dot nju.edu.cn
Target Milestone: ---
Compiler Explorer: https://godbolt.org/z/nejaohMWG
The GCC preprocessor crashes (Segmentation fault) when encountering a malformed
__has_include directive with mixed and unclosed delimiters.
Program:
```c
__has_include <"foo"
```
Part of the traceback:
```console
internal compiler error: Segmentation fault
2 | __has_include <"foo"
| ^~~~~~~~~~~~~
0x290fae8 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
???:0
0x29048ab internal_error(char const*, ...)
???:0
0x29e21e2 _cpp_lex_direct
???:0
0x29e4080 _cpp_lex_token
???:0
0xeaf18a c_lex_with_flags(tree_node**, unsigned long*, unsigned char*, int)
???:0
0xd52cfa c_parse_file()
???:0
0xec4909 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
```
