[PATCH RESEND2 2/4] add -Wformat
Ben Dooks <[email protected]>
| Newsgroups | org.kernel.vger.linux-sparse |
|---|---|
| Message-ID | <[email protected]> |
Add option to enable/disable format checking (and default it to off) Signed-off-by: Ben Dooks <[email protected]> --- options.c | 2 ++ options.h | 1 + sparse.1 | 8 ++++++++ 3 files changed, 11 insertions(+) diff --git a/options.c b/options.c index 6ee4d878..54ac00b4 100644 --- a/options.c +++ b/options.c @@ -106,6 +106,7 @@ int Wflexible_array_array = 1; int Wflexible_array_nested = 0; int Wflexible_array_sizeof = 0; int Wflexible_array_union = 0; +int Wformat = 0; int Wimplicit_int = 1; int Winit_cstring = 0; int Wint_to_pointer_cast = 1; @@ -865,6 +866,7 @@ static const struct flag warnings[] = { { "flexible-array-nested", &Wflexible_array_nested }, { "flexible-array-sizeof", &Wflexible_array_sizeof }, { "flexible-array-union", &Wflexible_array_union }, + { "format", &Wformat }, { "implicit-int", &Wimplicit_int }, { "init-cstring", &Winit_cstring }, { "int-to-pointer-cast", &Wint_to_pointer_cast }, diff --git a/options.h b/options.h index c2a9551a..105c45d0 100644 --- a/options.h +++ b/options.h @@ -106,6 +106,7 @@ extern int Wflexible_array_array; extern int Wflexible_array_nested; extern int Wflexible_array_sizeof; extern int Wflexible_array_union; +extern int Wformat; extern int Wimplicit_int; extern int Winit_cstring; extern int Wint_to_pointer_cast; diff --git a/sparse.1 b/sparse.1 index 2fba7e7a..64b0571e 100644 --- a/sparse.1 +++ b/sparse.1 @@ -285,6 +285,14 @@ To have any effect, at least one of \fB-Wflexible-array-array\fR, be enabled. Sparse does issue these warnings by default. +.B \-Wformat +Warn about parameter mismatch to any variadic function which specifies +where the format string is specified with the +.BI __attribute__((format( type, message, va_start ))) +attribute. + +Sparse does not issue these warnings by default. To turn them on, use +\fB\-W-format\fR. . .TP .B \-Winit\-cstring -- 2.37.2.352.g3c44437643