Tomohiro Kashiwada ea251536d5
[LLVM][Support] Allow char[N] parameters in llvm::format (#159541)
Cygwin builds are currently broken after #157312, which effectively
reverted #138117. The root cause is that Cygwin defines
`DL_info::dli_fname` as `char[N]`, which is not a valid parameter type
for `llvm::format`.

This patch allows `llvm::format` to accept `char[N]` by decaying it to
`const char *`. As a result, string literals are also accepted without
an explicit cast.

Other array types remain rejected:
- Wide/unicode character arrays (e.g., `wchar_t[N]`) are not supported,
as LLVM does not use them and they are less compatible with platform's
`printf` implementations.
- Non-character arrays (e.g., `int[N]`) are also rejected, since passing
such arrays to `printf` is meaningless.
2025-10-13 11:09:42 +02:00
2025-04-14 16:54:14 +08:00

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