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47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
#ifndef _GL_WARN_ON_USE
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# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
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/* A compiler attribute is available in gcc versions 4.3.0 and later. */
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# define _GL_WARN_ON_USE(function, message) \
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extern __typeof__ (function) function __attribute__ ((__warning__ (message)))
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# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
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/* Verify the existence of the function. */
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# define _GL_WARN_ON_USE(function, message) \
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extern __typeof__ (function) function
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# else /* Unsupported. */
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# define _GL_WARN_ON_USE(function, message) \
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_GL_WARN_EXTERN_C int _gl_warn_on_use
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# endif
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#endif
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/* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string")
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is like _GL_WARN_ON_USE (function, "string"), except that the function is
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declared with the given prototype, consisting of return type, parameters,
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and attributes.
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This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
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not work in this case. */
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#ifndef _GL_WARN_ON_USE_CXX
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# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
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# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
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extern rettype function parameters_and_attributes \
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__attribute__ ((__warning__ (msg)))
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# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
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/* Verify the existence of the function. */
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# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
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extern rettype function parameters_and_attributes
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# else /* Unsupported. */
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# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
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_GL_WARN_EXTERN_C int _gl_warn_on_use
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# endif
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#endif
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/* _GL_WARN_EXTERN_C declaration;
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performs the declaration with C linkage. */
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#ifndef _GL_WARN_EXTERN_C
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# if defined __cplusplus
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# define _GL_WARN_EXTERN_C extern "C"
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# else
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# define _GL_WARN_EXTERN_C extern
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# endif
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#endif
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