Wireshark-dev: Re: [Wireshark-dev] Fix signed overflow
From: Michael Mann <[email protected]>
Date: Thu, 11 Feb 2016 10:33:13 -0500
Your patch has already been included:
https://code.wireshark.org/review/13896
 
 
 
-----Original Message-----
From: Michael McConville <[email protected]>
To: wireshark-dev <[email protected]>
Sent: Thu, Feb 11, 2016 10:24 am
Subject: [Wireshark-dev] Fix signed overflow

Signed overflow is undefined, so the overflow check below is technically
meaningless. Because we're only checking whether an increment will
overflow, we can compare j to G_MAXINT instead.

Thanks for your time,
Michael


diff --git a/wiretap/merge.c b/wiretap/merge.c
index 19c11cd..06dc5db 100644
--- a/wiretap/merge.c
+++ b/wiretap/merge.c
@@ -148,7 +148,7 @@ merge_open_in_files(int in_file_count, const char *const *in_file_names,
}
size = wtap_file_size(files[i].wth, err);
if (size == -1) {
- for (j = 0; j + 1 > j && j <= i; j++)
+ for (j = 0; j != G_MAXINT && j <= i; j++)
cleanup_in_file(&files[j]);
*err_fileno = i;
return FALSE;
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