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| author | Masahiro Yamada <masahiroy@kernel.org> | 2023-12-03 12:49:32 +0300 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2023-12-10 09:34:37 +0300 |
| commit | 16a473f60edc30ffcdf355676263730a6028ec67 (patch) | |
| tree | e3d5c84affc4bfad27ab7ab33675dbed11ab662b /scripts/mod | |
| parent | cc87b7c06f2a6a1fbc7e06ccf6123aada4d0b588 (diff) | |
| download | linux-16a473f60edc30ffcdf355676263730a6028ec67.tar.xz | |
modpost: inform compilers that fatal() never returns
The function fatal() never returns because modpost_log() calls exit(1)
when LOG_FATAL is passed.
Inform compilers of this fact so that unreachable code flow can be
identified at compile time.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Diffstat (limited to 'scripts/mod')
| -rw-r--r-- | scripts/mod/modpost.c | 3 | ||||
| -rw-r--r-- | scripts/mod/modpost.h | 5 |
2 files changed, 7 insertions, 1 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index ca0a90158f85..c13bc9095df3 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -90,6 +90,9 @@ void modpost_log(enum loglevel loglevel, const char *fmt, ...) error_occurred = true; } +void __attribute__((alias("modpost_log"))) +modpost_log_noret(enum loglevel loglevel, const char *fmt, ...); + static inline bool strends(const char *str, const char *postfix) { if (strlen(str) < strlen(postfix)) diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index 9fe974dc1a52..835cababf1b0 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -200,6 +200,9 @@ enum loglevel { void __attribute__((format(printf, 2, 3))) modpost_log(enum loglevel loglevel, const char *fmt, ...); +void __attribute__((format(printf, 2, 3), noreturn)) +modpost_log_noret(enum loglevel loglevel, const char *fmt, ...); + /* * warn - show the given message, then let modpost continue running, still * allowing modpost to exit successfully. This should be used when @@ -215,4 +218,4 @@ modpost_log(enum loglevel loglevel, const char *fmt, ...); */ #define warn(fmt, args...) modpost_log(LOG_WARN, fmt, ##args) #define error(fmt, args...) modpost_log(LOG_ERROR, fmt, ##args) -#define fatal(fmt, args...) modpost_log(LOG_FATAL, fmt, ##args) +#define fatal(fmt, args...) modpost_log_noret(LOG_FATAL, fmt, ##args) |