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Code Issues Releases Wiki Activity

apparmor: fix zero-length compiler warning in AA_BUG()

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Uses of AA_BUG() without a message can result in the compiler warning

  warning: zero-length gnu_printf format string [-Wformat-zero-length]

Fix this with a pragma for now. A larger rework of AA_BUG() will
follow.

Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen 2021-09-02 23:27:31 -07:00
parent d0d845a790
commit 4d47fbbe54
1 changed files with 6 additions and 1 deletions
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7
security/apparmor/include/lib.h
View file

@ -31,7 +31,12 @@
#define AA_WARN(X) WARN((X), "APPARMOR WARN %s: %s\n", __func__, #X)
#define AA_BUG(X, args...) AA_BUG_FMT((X), "" args)
#define AA_BUG(X, args...) \
do { \
_Pragma("GCC diagnostic ignored \"-Wformat-zero-length\""); \
AA_BUG_FMT((X), "" args); \
_Pragma("GCC diagnostic warning \"-Wformat-zero-length\""); \
} while (0)
#ifdef CONFIG_SECURITY_APPARMOR_DEBUG_ASSERTS
#define AA_BUG_FMT(X, fmt, args...) \
WARN((X), "AppArmor WARN %s: (" #X "): " fmt, __func__, ##args)