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Another unintentional behavior change in commit e9931bfb75.

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Reported-by: Noah Misch <noah@leadboat.com>
Reviewed-by: Noah Misch <noah@leadboat.com>
Discussion: https://postgr.es/m/20250412123430.8c.nmisch@google.com
This commit is contained in:
Jeff Davis 2025-04-16 16:46:22 -07:00
parent b107744ce7
commit 2e5353be25
1 changed files with 12 additions and 0 deletions
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12
src/backend/regex/regc_pg_locale.c
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@ -559,10 +559,16 @@ pg_wc_toupper(pg_wchar c)
case PG_REGEX_STRATEGY_BUILTIN:
return unicode_uppercase_simple(c);
case PG_REGEX_STRATEGY_LIBC_WIDE:
/* force C behavior for ASCII characters, per comments above */
if (pg_regex_locale->is_default && c <= (pg_wchar) 127)
return pg_ascii_toupper((unsigned char) c);
if (sizeof(wchar_t) >= 4 || c <= (pg_wchar) 0xFFFF)
return towupper_l((wint_t) c, pg_regex_locale->info.lt);
/* FALL THRU */
case PG_REGEX_STRATEGY_LIBC_1BYTE:
/* force C behavior for ASCII characters, per comments above */
if (pg_regex_locale->is_default && c <= (pg_wchar) 127)
return pg_ascii_toupper((unsigned char) c);
if (c <= (pg_wchar) UCHAR_MAX)
return toupper_l((unsigned char) c, pg_regex_locale->info.lt);
return c;
@ -587,10 +593,16 @@ pg_wc_tolower(pg_wchar c)
case PG_REGEX_STRATEGY_BUILTIN:
return unicode_lowercase_simple(c);
case PG_REGEX_STRATEGY_LIBC_WIDE:
/* force C behavior for ASCII characters, per comments above */
if (pg_regex_locale->is_default && c <= (pg_wchar) 127)
return pg_ascii_tolower((unsigned char) c);
if (sizeof(wchar_t) >= 4 || c <= (pg_wchar) 0xFFFF)
return towlower_l((wint_t) c, pg_regex_locale->info.lt);
/* FALL THRU */
case PG_REGEX_STRATEGY_LIBC_1BYTE:
/* force C behavior for ASCII characters, per comments above */
if (pg_regex_locale->is_default && c <= (pg_wchar) 127)
return pg_ascii_tolower((unsigned char) c);
if (c <= (pg_wchar) UCHAR_MAX)
return tolower_l((unsigned char) c, pg_regex_locale->info.lt);
return c;