diff options
Diffstat (limited to 'meta/recipes-connectivity/nfs-utils/files/fix-a-Gcc-undefined-behavior.patch')
-rw-r--r-- | meta/recipes-connectivity/nfs-utils/files/fix-a-Gcc-undefined-behavior.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/meta/recipes-connectivity/nfs-utils/files/fix-a-Gcc-undefined-behavior.patch b/meta/recipes-connectivity/nfs-utils/files/fix-a-Gcc-undefined-behavior.patch new file mode 100644 index 0000000000..5843ba0fb9 --- /dev/null +++ b/meta/recipes-connectivity/nfs-utils/files/fix-a-Gcc-undefined-behavior.patch | |||
@@ -0,0 +1,38 @@ | |||
1 | [PATCH] fix a Gcc undefined behavior | ||
2 | |||
3 | Upstream-Status: Pending | ||
4 | |||
5 | Calling strncpy with NULL second argument, even when the size is 0, | ||
6 | is undefined behavior, which leads to GCC to drop the check old | ||
7 | variable with NULL in following code. | ||
8 | |||
9 | https://bugzilla.yoctoproject.org/show_bug.cgi?id=6743 | ||
10 | |||
11 | Signed-off-by: Roy Li <rongqing.li@windriver.com> | ||
12 | --- | ||
13 | support/export/client.c | 9 +++++++-- | ||
14 | 1 file changed, 7 insertions(+), 2 deletions(-) | ||
15 | |||
16 | diff --git a/support/export/client.c b/support/export/client.c | ||
17 | index dbf47b9..a37ef69 100644 | ||
18 | --- a/support/export/client.c | ||
19 | +++ b/support/export/client.c | ||
20 | @@ -482,8 +482,13 @@ add_name(char *old, const char *add) | ||
21 | else | ||
22 | cp = cp + strlen(cp); | ||
23 | } | ||
24 | - strncpy(new, old, cp-old); | ||
25 | - new[cp-old] = 0; | ||
26 | + | ||
27 | + if (old) { | ||
28 | + strncpy(new, old, cp-old); | ||
29 | + new[cp-old] = 0; | ||
30 | + } else | ||
31 | + new[0] = 0; | ||
32 | + | ||
33 | if (cp != old && !*cp) | ||
34 | strcat(new, ","); | ||
35 | strcat(new, add); | ||
36 | -- | ||
37 | 1.7.10.4 | ||
38 | |||