See https://godbolt.org/z/3rGTTr6jE.

write.cpp:
```C++
export module write;
export void write(const auto &v) {}
```

main.cpp:
```C++
import write;
int main() { write(char{}); }
```

Compile commands:
```
gcc -Wall -Wextra -fmodules-ts -std=c++23 -c write.cpp
gcc -Wall -Wextra -fmodules-ts -std=c++23 -c main.cpp
```

Output:
```
In module write, imported at main.cpp:1:
in pp_string, at pretty-print.c:1827
0x2068f9d internal_error(char const*, ...)
	???:0
0x973872 fancy_abort(char const*, int, char const*)
	???:0
0x2086861 pp_format(pretty_printer*, text_info*)
	???:0
0x2087d92 pp_verbatim(pretty_printer*, char const*, ...)
	???:0
0x2067adf diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
	???:0
0x2068720 warning_at(unsigned int, int, char const*, ...)
	???:0
0xca067c do_warn_unused_parameter(tree_node*)
	???:0
0xa3ba82 finish_function(bool)
	???:0
0xb77dfb instantiate_decl(tree_node*, bool, bool)
	???:0
0xb9b883 instantiate_pending_templates(int)
	???:0
0xa50e3c c_parse_final_cleanups()
	???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://bugs.archlinux.org/> for instructions.
```