ad1539d555
gcc/ChangeLog: PR c/66970 * doc/cpp.texi (__has_builtin): Document. * doc/extend.texi (__builtin_frob_return_addr): Correct spelling. gcc/c/ChangeLog: PR c/66970 * c-decl.c (names_builtin_p): Define a new function. gcc/c-family/ChangeLog: PR c/66970 * c-common.c (c_common_nodes_and_builtins): Call c_define_builtins even when only preprocessing. * c-common.h (names_builtin_p): Declare new function. * c-lex.c (init_c_lex): Set has_builtin. (c_common_has_builtin): Define a new function. * c-ppoutput.c (init_pp_output): Set has_builtin. gcc/cp/ChangeLog: PR c/66970 * cp-objcp-common.c (names_builtin_p): Define new function. gcc/testsuite/ChangeLog: PR c/66970 * c-c++-common/cpp/has-builtin-2.c: New test. * c-c++-common/cpp/has-builtin-3.c: New test. * c-c++-common/cpp/has-builtin.c: New test. From-SVN: r277544
37 lines
968 B
C
37 lines
968 B
C
/* PR c/66970 - Add __has_builtin() macro
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Verify __has_builtin evaluation for disabled library built-ins.
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{ dg-do compile }
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{ dg-options "-fno-builtin-abs" }
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{ dg-additional-options "-std=c90" { target c } } */
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#if !__has_builtin (__builtin_abs)
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// __builtin_xxx is always available regardless of -fno-builtin.
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# error "__has_builtin (__builtin_abs) failed"
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#endif
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#if __has_builtin (abs)
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# error "__has_builtin (abs) failed"
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#endif
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#if __has_builtin (abs)
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# error "__has_builtin (abs) failed"
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#endif
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#if !__has_builtin (__builtin_vsnprintf)
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// __builtin_vsnprintf is available in all language modes.
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# error "__has_builtin (__builtin_vsnprintf) failed"
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#endif
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#if !__has_builtin (vsnprintf)
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# if __cplusplus
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// vsnprintf is always available in C++.
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# error "__has_builtin (vsnprintf) failed"
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# endif
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#else
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# if !__cplusplus
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// vsnprintf is a C99 function not available in C90.
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# error "__has_builtin (vsnprintf) failed"
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# endif
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#endif
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