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Add SIZE_MAX overflow check

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Andrey A. Chernov 2010-03-09 21:06:01 +00:00
parent a6c03411f2
commit d2796d06d3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=204927
1 changed files with 2 additions and 0 deletions
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usr.bin/uniq/uniq.c
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@ -196,6 +196,8 @@ convert(const char *str)
if ((n = mbstowcs(NULL, str, 0)) == (size_t)-1)
return (NULL);
if (SIZE_MAX / sizeof(*buf) < n + 1)
errx(1, "conversion buffer length overflow");
if ((buf = malloc((n + 1) * sizeof(*buf))) == NULL)
err(1, "malloc");
if (mbstowcs(buf, str, n + 1) != n)