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| author | Jeff King <peff@peff.net> | 2012-12-15 12:42:10 -0500 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2012-12-15 10:45:59 -0800 |
| commit | a469a1019352b8efc4bd7003b0bd59eb60fc428c (patch) | |
| tree | 33246362997de827418a21c7d0a7530b2d92e6f8 | |
| parent | e208f9cc7574f5980faba498d0aa30b4defeb34f (diff) | |
| download | git-a469a1019352b8efc4bd7003b0bd59eb60fc428c.tar.gz git-a469a1019352b8efc4bd7003b0bd59eb60fc428c.tar.xz | |
silence some -Wuninitialized false positives
There are a few error functions that simply wrap error() and
provide a standardized message text. Like error(), they
always return -1; knowing that can help the compiler silence
some false positive -Wuninitialized warnings.
One strategy would be to just declare these as inline in the
header file so that the compiler can see that they always
return -1. However, gcc does not always inline them (e.g.,
it will not inline opterror, even with -O3), which renders
our change pointless.
Instead, let's follow the same route we did with error() in
the last patch, and define a macro that makes the constant
return value obvious to the compiler.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | cache.h | 3 | ||||
| -rw-r--r-- | config.c | 1 | ||||
| -rw-r--r-- | parse-options.c | 18 | ||||
| -rw-r--r-- | parse-options.h | 4 |
4 files changed, 17 insertions, 9 deletions
@@ -1136,6 +1136,9 @@ extern int check_repository_format_version(const char *var, const char *value, v extern int git_env_bool(const char *, int); extern int git_config_system(void); extern int config_error_nonbool(const char *); +#ifdef __GNUC__ +#define config_error_nonbool(s) (config_error_nonbool(s), -1) +#endif extern const char *get_log_output_encoding(void); extern const char *get_commit_output_encoding(void); @@ -1660,6 +1660,7 @@ int git_config_rename_section(const char *old_name, const char *new_name) * Call this to report error for your variable that should not * get a boolean value (i.e. "[my] var" means "true"). */ +#undef config_error_nonbool int config_error_nonbool(const char *var) { return error("Missing value for '%s'", var); diff --git a/parse-options.c b/parse-options.c index c1c66bd40..67e98a632 100644 --- a/parse-options.c +++ b/parse-options.c @@ -18,15 +18,6 @@ int optbug(const struct option *opt, const char *reason) return error("BUG: switch '%c' %s", opt->short_name, reason); } -int opterror(const struct option *opt, const char *reason, int flags) -{ - if (flags & OPT_SHORT) - return error("switch `%c' %s", opt->short_name, reason); - if (flags & OPT_UNSET) - return error("option `no-%s' %s", opt->long_name, reason); - return error("option `%s' %s", opt->long_name, reason); -} - static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt, int flags, const char **arg) { @@ -594,3 +585,12 @@ static int parse_options_usage(struct parse_opt_ctx_t *ctx, return usage_with_options_internal(ctx, usagestr, opts, 0, err); } +#undef opterror +int opterror(const struct option *opt, const char *reason, int flags) +{ + if (flags & OPT_SHORT) + return error("switch `%c' %s", opt->short_name, reason); + if (flags & OPT_UNSET) + return error("option `no-%s' %s", opt->long_name, reason); + return error("option `%s' %s", opt->long_name, reason); +} diff --git a/parse-options.h b/parse-options.h index 71a39c60d..e70385374 100644 --- a/parse-options.h +++ b/parse-options.h @@ -177,6 +177,10 @@ extern NORETURN void usage_msg_opt(const char *msg, extern int optbug(const struct option *opt, const char *reason); extern int opterror(const struct option *opt, const char *reason, int flags); +#ifdef __GNUC__ +#define opterror(o,r,f) (opterror((o),(r),(f)), -1) +#endif + /*----- incremental advanced APIs -----*/ enum { |