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Be more careful with string array bounds! Found by LLVM+Clang scan-build.

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tg
2012-12-04 01:11:17 +00:00
parent 5a70000aaf
commit 9d2fefeac4
2 changed files with 8 additions and 6 deletions
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5
var.c
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@@ -27,7 +27,7 @@
#include <sys/sysctl.h>
#endif
__RCSID("$MirOS: src/bin/mksh/var.c,v 1.162 2012/12/01 01:36:30 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/var.c,v 1.163 2012/12/04 01:11:17 tg Exp $");
/*-
* Variables
@@ -615,10 +615,13 @@ formatstr(struct tbl *vp, const char *s)
--slen;
}
if (vp->flag & ZEROFIL && vp->flag & INTEGER) {
if (!s[0] || !s[1])
goto uhm_no;
if (s[1] == '#')
n = 2;
else if (s[2] == '#')
n = 3;
uhm_no:
if (vp->u2.field <= n)
n = 0;
}