* [PATCH] parse: fix signed overflow in ecstrcode()
@ 2019-03-14 9:40 Kamil Dudka
0 siblings, 0 replies; only message in thread
From: Kamil Dudka @ 2019-03-14 9:40 UTC (permalink / raw)
To: zsh-workers
Detected by GCC with -fsanitize=undefined:
parse.c:420:47: runtime error: signed integer overflow: -2003020233 - 1064446834 cannot be represented in type 'int'
---
Src/parse.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Src/parse.c b/Src/parse.c
index 83383f10c..22e553a16 100644
--- a/Src/parse.c
+++ b/Src/parse.c
@@ -414,10 +414,10 @@ ecstrcode(char *s)
return c;
} else {
Eccstr p, *pp;
- int cmp;
+ long cmp;
for (pp = &ecstrs; (p = *pp); ) {
- if (!(cmp = p->nfunc - ecnfunc) && !(cmp = (((signed)p->hashval) - ((signed)val))) && !(cmp = strcmp(p->str, s))) {
+ if (!(cmp = p->nfunc - ecnfunc) && !(cmp = (((long)p->hashval) - ((long)val))) && !(cmp = strcmp(p->str, s))) {
return p->offs;
}
pp = (cmp < 0 ? &(p->left) : &(p->right));
--
2.17.2
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2019-03-14 9:40 [PATCH] parse: fix signed overflow in ecstrcode() Kamil Dudka
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