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-rw-r--r--libcxx/include/__locale6
1 files changed, 6 insertions, 0 deletions
diff --git a/libcxx/include/__locale b/libcxx/include/__locale
index 2b6982fc6810..6d10fa4d3d64 100644
--- a/libcxx/include/__locale
+++ b/libcxx/include/__locale
@@ -496,7 +496,13 @@ public:
static const mask punct = 1<<7;
static const mask xdigit = 1<<8;
static const mask blank = 1<<9;
+#if defined(__BIONIC__)
+ // Historically this was a part of regex_traits rather than ctype_base. The
+ // historical value of the constant is preserved for ABI compatibility.
+ static const mask __regex_word = 0x8000;
+#else
static const mask __regex_word = 1<<10;
+#endif // defined(__BIONIC__)
#endif
static const mask alnum = alpha | digit;
static const mask graph = alnum | punct;