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mruby
Commit 2f142541 authored by Yukihiro "Matz" Matsumoto's avatar Yukihiro "Matz" Matsumoto
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Avoid potential integer overflow.

parent 752edf41
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Showing with 3 additions and 2 deletions
mrbgems/mruby-pack/src/pack.c
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......@@ -1075,10 +1075,11 @@ alias:
if (ISDIGIT(ch)) {
count = ch - '0';
while (tmpl->idx < tlen && ISDIGIT(tptr[tmpl->idx])) {
count = count * 10 + (tptr[tmpl->idx++] - '0');
if (count < 0) {
int ch = tptr[tmpl->idx++] - '0';
if (count+ch > INT_MAX/10) {
mrb_raise(mrb, E_RUNTIME_ERROR, "too big template length");
}
count = count * 10 + ch;
}
continue; /* special case */
} else if (ch == '*') {
......
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