From: Karel Zak <kzak@redhat.com>
Date: Wed, 15 May 2019 15:10:38 +0000 (+0200)
Subject: libfdisk: avoid division by zero [clang scan]
X-Git-Tag: v2.34-rc2~64
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=845fd622ed0f7bff383700cf777cee7fef486de5;p=thirdparty%2Futil-linux.git

libfdisk: avoid division by zero [clang scan]

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/libfdisk/src/gpt.c b/libfdisk/src/gpt.c
index b12a9cb60a..1658782a85 100644
--- a/libfdisk/src/gpt.c
+++ b/libfdisk/src/gpt.c
@@ -2748,8 +2748,13 @@ int fdisk_gpt_set_npartitions(struct fdisk_context *cxt, uint32_t entries)
 	/* calculate the size (bytes) of the entries array */
 	rc = gpt_calculate_sizeof_ents(gpt->pheader, entries, &new_size);
 	if (rc) {
-		fdisk_warnx(cxt, _("The number of the partition has to be smaller than %zu."),
-				UINT32_MAX / le32_to_cpu(gpt->pheader->sizeof_partition_entry));
+		uint32_t entry_size = le32_to_cpu(gpt->pheader->sizeof_partition_entry);
+
+		if (entry_size == 0)
+			fdisk_warnx(cxt, _("The partition entry size is zero."));
+		else
+			fdisk_warnx(cxt, _("The number of the partition has to be smaller than %zu."),
+				UINT32_MAX / entry_size);
 		return rc;
 	}