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NC_mktmp: pass the remaining space to strncat

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This could overflow if `tmp` only had a few bytes left in its space
given its current contents.
This commit is contained in:
Ben Boeckel 2019-01-11 10:47:03 -05:00
parent b3f34432a3
commit 94a0259f0e
1 changed files with 1 additions and 1 deletions
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libdispatch/dutil.c
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@ -208,7 +208,7 @@ NC_mktmp(const char* base)
char spid[7];
if(rno < 0) rno = -rno;
snprintf(spid,sizeof(spid),"%06d",rno);
strncat(tmp,spid,sizeof(tmp));
strncat(tmp,spid,sizeof(tmp) - strlen(tmp) - 1);
}
#endif /* HAVE_MKTEMP */
#ifdef _MSC_VER