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string.c (check_null_byte): str may point NULL buffer; ref #6067

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Yukihiro "Matz" Matsumoto
2023-09-27 23:23:38 +09:00
parent 0ac917e228
commit 4c7fab6126
1 changed files with 2 additions and 1 deletions
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src/string.c
+2 -1
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@@ -246,7 +246,8 @@ str_modify_keep_ascii(mrb_state *mrb, struct RString *s)
static void
check_null_byte(mrb_state *mrb, struct RString *str)
{
if (memchr(RSTR_PTR(str), '\0', RSTR_LEN(str))) {
const char *p = RSTR_PTR(str);
if (p && memchr(p, '\0', RSTR_LEN(str))) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "string contains null byte");
}
}