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| author | bapt <bapt@FreeBSD.org> | 2015-05-05 09:29:32 +0000 |
|---|---|---|
| committer | bapt <bapt@FreeBSD.org> | 2015-05-05 09:29:32 +0000 |
| commit | 8224924ecc21a6daf1fed7e728b8133b7e5821db (patch) | |
| tree | 5c9295e563e57bf5a08b26164616b4ee8693ae32 | |
| parent | a7c69e6c584b3caca1f276d613965dbd251cc971 (diff) | |
| download | FreeBSD-src-8224924ecc21a6daf1fed7e728b8133b7e5821db.zip FreeBSD-src-8224924ecc21a6daf1fed7e728b8133b7e5821db.tar.gz | |
Ensure we read existing values of the stk table
Obtained from: NetBSD
| -rw-r--r-- | usr.bin/checknr/checknr.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/usr.bin/checknr/checknr.c b/usr.bin/checknr/checknr.c index 01d3216..c150b79 100644 --- a/usr.bin/checknr/checknr.c +++ b/usr.bin/checknr/checknr.c @@ -341,7 +341,8 @@ process(FILE *f) n = 10 * n + line[i] - '0'; i--; if (n == 0) { - if (stk[stktop].opno == SZ) { + if (stktop >= 0 && + stk[stktop].opno == SZ) { stktop--; } else { pe(lineno); @@ -356,7 +357,8 @@ process(FILE *f) } else if (!fflag && line[i] == 'f') { n = line[++i]; if (n == 'P') { - if (stk[stktop].opno == FT) { + if (stktop >= 0 && + stk[stktop].opno == FT) { stktop--; } else { pe(lineno); |
