diff options
Diffstat (limited to 'ext/json/parser/parser.c')
| -rw-r--r-- | ext/json/parser/parser.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ext/json/parser/parser.c b/ext/json/parser/parser.c index 9cbe2c1d7e..c21a5fda5f 100644 --- a/ext/json/parser/parser.c +++ b/ext/json/parser/parser.c @@ -135,7 +135,7 @@ static VALUE rstring_cache_fetch(rvalue_cache *cache, const char *str, const lon return Qfalse; } - if (RB_UNLIKELY(!isalpha(str[0]))) { + if (RB_UNLIKELY(!isalpha((unsigned char)str[0]))) { // Simple heuristic, if the first character isn't a letter, // we're much less likely to see this string again. // We mostly want to cache strings that are likely to be repeated. @@ -187,7 +187,7 @@ static VALUE rsymbol_cache_fetch(rvalue_cache *cache, const char *str, const lon return Qfalse; } - if (RB_UNLIKELY(!isalpha(str[0]))) { + if (RB_UNLIKELY(!isalpha((unsigned char)str[0]))) { // Simple heuristic, if the first character isn't a letter, // we're much less likely to see this string again. // We mostly want to cache strings that are likely to be repeated. |