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| author | Bruno Haible <bruno@clisp.org> | 2020-08-09 14:51:56 +0200 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2020-08-09 14:51:56 +0200 |
| commit | 94e462dba2d39c73858d855d528f2d86253de498 (patch) | |
| tree | 9c50b3d0f820a99e0d0acbc2b5e05fe42b469764 /lib | |
| parent | 90cc47f28487c90cecfb312c808a0710dcfbf114 (diff) | |
| download | gnulib-94e462dba2d39c73858d855d528f2d86253de498.tar.gz | |
Add ability to emit user-defined warnings and errors with clang.
* m4/gnulib-common.m4 (gl_COMMON_BODY): Define _GL_ATTRIBUTE_ERROR,
_GL_ATTRIBUTE_WARNING using an attribute for clang.
* lib/warn-on-use.h (_GL_WARN_ON_USE, _GL_WARN_ON_USE_ATTRIBUTE,
_GL_WARN_ON_USE_CXX): Define using an attribute for clang.
* lib/cdefs.h (__warndecl, __warnattr, __errordecl): Define using an
attribute for clang.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/cdefs.h | 6 | ||||
| -rw-r--r-- | lib/warn-on-use.h | 15 |
2 files changed, 20 insertions, 1 deletions
diff --git a/lib/cdefs.h b/lib/cdefs.h index b034c0bdfd..801753c7f3 100644 --- a/lib/cdefs.h +++ b/lib/cdefs.h @@ -129,6 +129,12 @@ # define __warnattr(msg) __attribute__((__warning__ (msg))) # define __errordecl(name, msg) \ extern void name (void) __attribute__((__error__ (msg))) +#elif __clang_major__ >= 4 +# define __warndecl(name, msg) \ + extern void name (void) __attribute__((__diagnose_if__ (1, msg, "warning"))) +# define __warnattr(msg) __attribute__((__diagnose_if__ (1, msg, "warning"))) +# define __errordecl(name, msg) \ + extern void name (void) __attribute__((__diagnose_if__ (1, msg, "error"))) #else # define __warndecl(name, msg) extern void name (void) # define __warnattr(msg) diff --git a/lib/warn-on-use.h b/lib/warn-on-use.h index 291e7091b8..a39e3a394c 100644 --- a/lib/warn-on-use.h +++ b/lib/warn-on-use.h @@ -87,6 +87,13 @@ extern __typeof__ (function) function __attribute__ ((__warning__ (message))) # define _GL_WARN_ON_USE_ATTRIBUTE(message) \ __attribute__ ((__warning__ (message))) +# elif __clang_major__ >= 4 +/* Another compiler attribute is available in clang. */ +# define _GL_WARN_ON_USE(function, message) \ +extern __typeof__ (function) function \ + __attribute__ ((__diagnose_if__ (1, message, "warning"))) +# define _GL_WARN_ON_USE_ATTRIBUTE(message) \ + __attribute__ ((__diagnose_if__ (1, message, "warning"))) # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING /* Verify the existence of the function. */ # define _GL_WARN_ON_USE(function, message) \ @@ -111,9 +118,15 @@ _GL_WARN_EXTERN_C int _gl_warn_on_use _GL_WARN_ON_USE (function, msg) # else # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) +/* A compiler attribute is available in gcc versions 4.3.0 and later. */ +# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ +extern rettype function parameters_and_attributes \ + __attribute__ ((__warning__ (msg))) +# elif __clang_major__ >= 4 +/* Another compiler attribute is available in clang. */ # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ extern rettype function parameters_and_attributes \ - __attribute__ ((__warning__ (msg))) + __attribute__ ((__diagnose_if__ (1, msg, "warning"))) # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING /* Verify the existence of the function. */ # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ |