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authorNathan Chancellor <natechancellor@gmail.com>2018-06-02 09:02:09 -0700
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-06-05 22:07:21 +0900
commit2ae89c7a82ea9d81a19b4fc2df23bef4b112f24e (patch)
tree0c57359c62019cf28dde609a34e2019c850f50ab
parentbb6d83dde1913ef5023998976127b9b30f7825b9 (diff)
downloadlinux-stericsson-2ae89c7a82ea9d81a19b4fc2df23bef4b112f24e.tar.gz
kconfig: Avoid format overflow warning from GCC 8.1
In file included from scripts/kconfig/zconf.tab.c:2485: scripts/kconfig/confdata.c: In function ‘conf_write’: scripts/kconfig/confdata.c:773:22: warning: ‘%s’ directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=] sprintf(newname, "%s%s", dirname, basename); ^~ scripts/kconfig/confdata.c:773:19: note: assuming directive output of 7 bytes sprintf(newname, "%s%s", dirname, basename); ^~~~~~ scripts/kconfig/confdata.c:773:2: note: ‘sprintf’ output 1 or more bytes (assuming 4104) into a destination of size 4097 sprintf(newname, "%s%s", dirname, basename); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ scripts/kconfig/confdata.c:776:23: warning: ‘.tmpconfig.’ directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=] sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); ^~~~~~~~~~~ scripts/kconfig/confdata.c:776:3: note: ‘sprintf’ output between 13 and 4119 bytes into a destination of size 4097 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Increase the size of tmpname and newname to make GCC happy. Cc: stable@vger.kernel.org Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
-rw-r--r--scripts/kconfig/confdata.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 5f87ad561b08..39e20974f4a3 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -720,7 +720,7 @@ int conf_write(const char *name)
struct menu *menu;
const char *basename;
const char *str;
- char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
+ char dirname[PATH_MAX+1], tmpname[PATH_MAX+22], newname[PATH_MAX+8];
char *env;
dirname[0] = 0;