[libc-commits] [libc] [libc] Define `MB_LEN_MAX` in `limits.h` (PR #102246)

[via libc-commits]

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@@ -19,12 +19,9 @@
 #endif // __CHAR_BIT__
 #endif // CHAR_BIT
 
-// TODO: https://github.com/llvm/llvm-project/issues/79358
-//   Define MB_LEN_MAX if missing.
-//     clang: MB_LEN_MAX = 1 -
-// https://github.com/llvm/llvm-project/blob/main/clang/lib/Headers/limits.h#L64
-//     glibc: MB_LEN_MAX = 16 -
-// https://github.com/bminor/glibc/blob/master/include/limits.h#L32
+#ifndef MB_LEN_MAX
+#define MB_LEN_MAX 4
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lntue wrote:

Do you mind adding comments about the rationale of the value, in case the assumption is changed in the future?

https://github.com/llvm/llvm-project/pull/102246