Merge pull request json-c#646 from pascal-cuoq/fix_645

hawicz · web-flow · commit 64de4b6e9f3c · 2020-07-21T21:24:59.000-04:00
Cast to unsigned char instead of int when calling tolower (Fixes json-c#645)
diff --git a/json_tokener.c b/json_tokener.c
@@ -430,7 +430,7 @@ struct json_object *json_tokener_parse_ex(struct json_tokener *tok, const char *
 			{
 				char inf_char = *str;
 				if (!(tok->flags & JSON_TOKENER_STRICT))
-					inf_char = tolower((int)*str);
+					inf_char = tolower((unsigned char)*str);
 				if (inf_char != _json_inf_str[tok->st_pos])
 				{
 					tok->err = json_tokener_error_parse_unexpected;

Original file line number	Diff line number	Diff line change
`@@ -430,7 +430,7 @@ struct json_object json_tokener_parse_ex(struct json_tokener tok, const char *`
`430`	`430`	`{`
`431`	`431`	`char inf_char = *str;`
`432`	`432`	`if (!(tok->flags & JSON_TOKENER_STRICT))`
`433`		`- inf_char = tolower((int)*str);`
	`433`	`+ inf_char = tolower((unsigned char)*str);`
`434`	`434`	`if (inf_char != _json_inf_str[tok->st_pos])`
`435`	`435`	`{`
`436`	`436`	`tok->err = json_tokener_error_parse_unexpected;`