[32/32] date.c: fix code that may overflow 'int' before it is converted to 'time_t'
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Message ID 20191104095923.116086-3-gitter.spiros@gmail.com
State New
Headers show
Series
  • Untitled series #197375
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Commit Message

Elia Pinto Nov. 4, 2019, 9:59 a.m. UTC
Fix the LGTM warning fired by the rule that finds code that could convert the result of an integer
multiplication to a larger type. Since the conversion applies after the multiplication,
arithmetic overflow may still occur.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
---
 date.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/date.c b/date.c
index 041db7db4e..b8dcbdbb0e 100644
--- a/date.c
+++ b/date.c
@@ -1172,7 +1172,7 @@  static const char *approxidate_alpha(const char *date, struct tm *tm, struct tm
 	while (tl->type) {
 		int len = strlen(tl->type);
 		if (match_string(date, tl->type) >= len-1) {
-			update_tm(tm, now, tl->length * *num);
+			update_tm(tm, now, (time_t)tl->length * *num);
 			*num = 0;
 			*touched = 1;
 			return end;