[all-commits] [llvm/llvm-project] 079ca0: [libc] fix -Wtype-limits in wctob (#74511)

[Nick Desaulniers via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 079ca05eea35745b2c362c218069dcc1c33982b9
      https://github.com/llvm/llvm-project/commit/079ca05eea35745b2c362c218069dcc1c33982b9
  Author: Nick Desaulniers <nickdesaulniers at users.noreply.github.com>
  Date:   2023-12-05 (Tue, 05 Dec 2023)

  Changed paths:
    M libc/src/__support/wctype_utils.h

  Log Message:
  -----------
  [libc] fix -Wtype-limits in wctob (#74511)

GCC warns:
```
libc/src/__support/wctype_utils.h:33:20: error: comparison of unsigned
expression in ‘< 0’ is always false [-Werror=type-limits]
   33 |   if (c > 127 || c < 0)
      |                  ~~^~~
```

Looking into the signedness of wint_t, it looks like depending on the
platform,
__WINT_TYPE__ is defined to int or unsigned int depending on the
platform.

Link:
https://lab.llvm.org/buildbot/#/builders/250/builds/14891/steps/6/logs/stdio