[libcxx-commits] [libcxx] 6ea3344 - [libc++] Fix regex_traits::isctype on big endian platforms (#73200)

[via libcxx-commits]

Author: W-50243
Date: 2023-12-07T09:18:00-05:00
New Revision: 6ea334456d5851e083b8867f392e00685bc79408

URL: https://github.com/llvm/llvm-project/commit/6ea334456d5851e083b8867f392e00685bc79408
DIFF: https://github.com/llvm/llvm-project/commit/6ea334456d5851e083b8867f392e00685bc79408.diff

LOG: [libc++] Fix regex_traits::isctype on big endian platforms (#73200)

'isctype' fails in arm64-big-endian because the __regex_word involved
in mask operation is not changed based on the platform endianness, while
the character mask does change.

Added: 
    

Modified: 
    libcxx/include/__locale

Removed: 
    


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diff  --git a/libcxx/include/__locale b/libcxx/include/__locale
index ab36939f9c14c..6eb892287160e 100644
--- a/libcxx/include/__locale
+++ b/libcxx/include/__locale
@@ -389,7 +389,7 @@ public:
     static const mask punct  = _ISpunct;
     static const mask xdigit = _ISxdigit;
     static const mask blank  = _ISblank;
-#if defined(__mips__)
+#if defined(__mips__) || (BYTE_ORDER == BIG_ENDIAN)
     static const mask __regex_word = static_cast<mask>(_ISbit(15));
 #else
     static const mask __regex_word = 0x80;