96 lines
3.0 KiB
Diff
96 lines
3.0 KiB
Diff
From 85c24fe2b11cd136d43bbffd983014a3f967c25e Mon Sep 17 00:00:00 2001
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From: Ondrej Oprala <ooprala@redhat.com>
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Date: Fri, 21 Dec 2012 13:04:04 +0100
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Subject: [PATCH 2/3] hexdump: do not segfault when iterating over an empty
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format string
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Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
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---
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tests/commands.sh | 1 +
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tests/expected/hexdump/empty-format | 1 +
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tests/ts/hexdump/empty-format | 26 ++++++++++++++++++++++++++
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text-utils/parse.c | 16 +++++++++-------
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4 files changed, 37 insertions(+), 7 deletions(-)
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create mode 100644 tests/expected/hexdump/empty-format
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create mode 100755 tests/ts/hexdump/empty-format
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diff --git a/tests/commands.sh b/tests/commands.sh
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index db1d4ac..3672095 100644
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--- a/tests/commands.sh
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+++ b/tests/commands.sh
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@@ -62,3 +62,4 @@ TS_CMD_FINDMNT=${TS_CMD_FINDMNT-"$top_builddir/findmnt"}
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TS_CMD_FDISK=${TS_CMD_FDISK-"$top_builddir/fdisk"}
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+TS_CMD_HEXDUMP=${TS_CMD_HEXDUMP-"$top_builddir/hexdump"}
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diff --git a/tests/expected/hexdump/empty-format b/tests/expected/hexdump/empty-format
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new file mode 100644
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index 0000000..9d60796
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--- /dev/null
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+++ b/tests/expected/hexdump/empty-format
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@@ -0,0 +1 @@
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+11
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\ No newline at end of file
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diff --git a/tests/ts/hexdump/empty-format b/tests/ts/hexdump/empty-format
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new file mode 100755
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index 0000000..4a3e528
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--- /dev/null
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+++ b/tests/ts/hexdump/empty-format
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@@ -0,0 +1,26 @@
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+#!/bin/bash
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+
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+# This file is part of util-linux.
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+#
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+# This file is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+#
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+# This file is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+TS_TOPDIR="$(dirname $0)/../.."
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+TS_DESC="format-strings"
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+
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+. $TS_TOPDIR/functions.sh
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+ts_init "$*"
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+
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+INPUT=$(printf \\1)
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+$TS_CMD_HEXDUMP -n1 -ve '2 "" "%x"' <<< $INPUT 2>&1 >> $TS_OUTPUT
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+
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+$TS_CMD_HEXDUMP -n1 -ve '4 "%x"' -e '2 ""' <<< $INPUT 2>&1 >> $TS_OUTPUT
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+
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+ts_finalize
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diff --git a/text-utils/parse.c b/text-utils/parse.c
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index 5f1e2bd..bd96961 100644
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--- a/text-utils/parse.c
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+++ b/text-utils/parse.c
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@@ -421,13 +421,15 @@ isint2: switch(fu->bcnt) {
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!(fu->flags&F_SETREP) && fu->bcnt)
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fu->reps += (blocksize - fs->bcnt) / fu->bcnt;
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if (fu->reps > 1) {
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- for (pr = fu->nextpr;; pr = pr->nextpr)
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- if (!pr->nextpr)
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- break;
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- for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
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- p2 = isspace((unsigned char)*p1) ? p1 : NULL;
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- if (p2)
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- pr->nospace = p2;
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+ if (fu->nextpr) {
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+ for (pr = fu->nextpr; ; pr = pr->nextpr)
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+ if (!pr->nextpr)
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+ break;
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+ for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
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+ p2 = isspace((unsigned char)*p1) ? p1 : NULL;
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+ if (p2)
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+ pr->nospace = p2;
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+ }
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}
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}
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}
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--
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1.8.1
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