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ICUCtypeData: Fix MB_CUR_MAX under most encodings.

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See inline comment.

Fixes #19881.
This commit is contained in:
Augustin Cavalier
2026-01-15 18:48:10 -05:00
parent f1ca09f6a2
commit 7b94842122
1 changed files with 8 additions and 1 deletions
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src/system/libroot/add-ons/icu/ICUCtypeData.cpp
+8 -1
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@@ -74,7 +74,14 @@ ICUCtypeData::SetTo(const Locale& locale, const char* posixLocaleName)
ucnv_reset(converter); ucnv_reset(converter);
*fDataBridge->addrOfMbCurMax = ucnv_getMaxCharSize(converter); short mbMax = ucnv_getMaxCharSize(converter);
if (mbMax > 1 && mbMax < 4) {
// ucnv_getMaxCharSize() returns the maximum size of an encoded UChar,
// which is 16-bit, and not a 32-bit Unicode codepoint. So, unless
// some exotic encoding is being used, 4 is the value we actually want.
mbMax = 4;
}
*fDataBridge->addrOfMbCurMax = mbMax;
char buffer[] = { 0, 0 }; char buffer[] = { 0, 0 };
for (int i = 0; i < 256; ++i) { for (int i = 0; i < 256; ++i) {