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Avoid global LC_CTYPE dependency in pg_locale_libc.c.

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Call tolower_l() directly instead of through pg_tolower(), because the
latter depends on the global LC_CTYPE.

Discussion: https://postgr.es/m/8186b28a1a39e61a0d833a4c25a8909ebbbabd48.camel@j-davis.com
This commit is contained in:
Jeff Davis
2025-11-24 14:55:09 -08:00
parent 698fa924b1
commit f81bf78ce1
1 changed files with 24 additions and 4 deletions
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28
src/backend/utils/adt/pg_locale_libc.c
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@@ -450,7 +450,12 @@ strlower_libc_sb(char *dest, size_t destsize, const char *src, ssize_t srclen,
for (p = dest; *p; p++)
{
if (locale->is_default)
*p = pg_tolower((unsigned char) *p);
{
if (*p >= 'A' && *p <= 'Z')
*p += 'a' - 'A';
else if (IS_HIGHBIT_SET(*p) && isupper_l(*p, loc))
*p = tolower_l((unsigned char) *p, loc);
}
else
*p = tolower_l((unsigned char) *p, loc);
}
@@ -535,9 +540,19 @@ strtitle_libc_sb(char *dest, size_t destsize, const char *src, ssize_t srclen,
if (locale->is_default)
{
if (wasalnum)
*p = pg_tolower((unsigned char) *p);
{
if (*p >= 'A' && *p <= 'Z')
*p += 'a' - 'A';
else if (IS_HIGHBIT_SET(*p) && isupper_l(*p, loc))
*p = tolower_l((unsigned char) *p, loc);
}
else
*p = pg_toupper((unsigned char) *p);
{
if (*p >= 'a' && *p <= 'z')
*p -= 'a' - 'A';
else if (IS_HIGHBIT_SET(*p) && islower_l(*p, loc))
*p = toupper_l((unsigned char) *p, loc);
}
}
else
{
@@ -633,7 +648,12 @@ strupper_libc_sb(char *dest, size_t destsize, const char *src, ssize_t srclen,
for (p = dest; *p; p++)
{
if (locale->is_default)
*p = pg_toupper((unsigned char) *p);
{
if (*p >= 'a' && *p <= 'z')
*p -= 'a' - 'A';
else if (IS_HIGHBIT_SET(*p) && islower_l(*p, loc))
*p = toupper_l((unsigned char) *p, loc);
}
else
*p = toupper_l((unsigned char) *p, loc);
}