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Merge pull request #930 from dxbjavid/get-double-locale-radix

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fix locale-dependent strtod in json_object_get_double
This commit is contained in:
Eric Hawicz
2026-06-21 19:46:36 -04:00
committed by GitHub
parent e1812074fa c6cd1f236c
commit cce075f551
2 changed files with 50 additions and 2 deletions
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tests/test_locale.c
+12
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@@ -40,6 +40,18 @@ int main(int argc, char **argv)
if (strcmp(buf1, buf2) != 0)
printf("ERROR: Original locale not restored \"%s\" != \"%s\"", buf1, buf2);
// json_object_get_double() on a json_type_string must not depend on the
// locale's decimal point. Under a comma-radix locale such as de_DE the
// '.' used to be treated as a stray char, so "19.95" came back as 0.
// (If the de_DE locale isn't installed we're still in "C" here, where
// this passes anyway, so the check is safe to always run.)
{
json_object *numstr = json_object_new_string("19.95");
double d = json_object_get_double(numstr);
assert(d > 19.94 && d < 19.96);
json_object_put(numstr);
}
#ifdef HAVE_SETLOCALE
setlocale(LC_NUMERIC, "C");
#endif