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add mrb_int overflow check for mrb_int

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This commit is contained in:
Yukihiro Matz Matsumoto
2013-03-14 23:12:21 +09:00
parent 228687cfff
commit 08a0c9f328
1 changed files with 6 additions and 2 deletions
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src/string.c
+6 -2
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@@ -2050,6 +2050,7 @@ mrb_cstr_to_inum(mrb_state *mrb, const char *str, int base, int badcheck)
char *end;
char sign = 1;
int c;
unsigned int n;
mrb_int val;
#undef ISDIGIT
@@ -2154,8 +2155,11 @@ mrb_cstr_to_inum(mrb_state *mrb, const char *str, int base, int badcheck)
return mrb_fixnum_value(0);
}
val = strtoul((char*)str, &end, base);
n = strtoul((char*)str, &end, base);
if (n > MRB_INT_MAX) {
mrb_raisef(mrb, E_ARGUMENT_ERROR, "string (%s) too big for integer", str);
}
val = n;
if (badcheck) {
if (end == str) goto bad; /* no number */
while (*end && ISSPACE(*end)) end++;