diff options
Diffstat (limited to 'lib/warn-on-use.h')
| -rw-r--r-- | lib/warn-on-use.h | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/lib/warn-on-use.h b/lib/warn-on-use.h index 23c10fdd122..3f728d1a9dc 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) \ @@ -99,27 +106,33 @@ _GL_WARN_EXTERN_C int _gl_warn_on_use # endif #endif -/* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string") - is like _GL_WARN_ON_USE (function, "string"), except that in C++ mode the +/* _GL_WARN_ON_USE_CXX (function, rettype_gcc, rettype_clang, parameters_and_attributes, "message") + is like _GL_WARN_ON_USE (function, "message"), except that in C++ mode the function is declared with the given prototype, consisting of return type, parameters, and attributes. This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does not work in this case. */ #ifndef _GL_WARN_ON_USE_CXX # if !defined __cplusplus -# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ +# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \ _GL_WARN_ON_USE (function, msg) # else # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) -# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ -extern rettype function parameters_and_attributes \ - __attribute__ ((__warning__ (msg))) +/* A compiler attribute is available in gcc versions 4.3.0 and later. */ +# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \ +extern rettype_gcc 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_gcc,rettype_clang,parameters_and_attributes,msg) \ +extern rettype_clang function parameters_and_attributes \ + __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) \ -extern rettype function parameters_and_attributes +# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \ +extern rettype_gcc function parameters_and_attributes # else /* Unsupported. */ -# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ +# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \ _GL_WARN_EXTERN_C int _gl_warn_on_use # endif # endif |