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708afb56c1
Summary: This patch implements the source location builtins `__builtin_LINE(), `__builtin_FUNCTION()`, `__builtin_FILE()` and `__builtin_COLUMN()`. These builtins are needed to implement [`std::experimental::source_location`](https://rawgit.com/cplusplus/fundamentals-ts/v2/main.html#reflection.src_loc.creation). With the exception of `__builtin_COLUMN`, GCC also implements these builtins, and Clangs behavior is intended to match as closely as possible. Reviewers: rsmith, joerg, aaron.ballman, bogner, majnemer, shafik, martong Reviewed By: rsmith Subscribers: rnkovacs, loskutov, riccibruno, mgorny, kunitoki, alexr, majnemer, hfinkel, cfe-commits Differential Revision: https://reviews.llvm.org/D37035 llvm-svn: 360937
33 lines
966 B
C
33 lines
966 B
C
// RUN: %clang_cc1 -std=c90 -fconst-strings -DCONST_STRINGS -verify %s
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// RUN: %clang_cc1 -std=c90 -verify %s
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// expected-no-diagnostics
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#define IsEqual(L, R) (__builtin_strcmp(L, R) == 0)
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const char *const FILE = __builtin_FILE();
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const char *const FUNC = __builtin_FUNCTION();
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const unsigned LINE = __builtin_LINE();
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const unsigned COL = __builtin_COLUMN();
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#ifndef CONST_STRINGS
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char *const NCFILE = __builtin_FILE();
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char *const NCFUNC = __builtin_FUNCTION();
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#endif
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#ifdef CONST_STRINGS
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_Static_assert(IsEqual(__builtin_FILE(), __FILE__), "");
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_Static_assert(__builtin_LINE() == __LINE__, "");
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_Static_assert(IsEqual("", __builtin_FUNCTION()), "");
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#line 42 "my_file.c"
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_Static_assert(__builtin_LINE() == 42, "");
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_Static_assert(IsEqual(__builtin_FILE(), "my_file.c"), "");
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_Static_assert(__builtin_COLUMN() == __builtin_strlen("_Static_assert(_"), "");
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void foo() {
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_Static_assert(IsEqual(__builtin_FUNCTION(), "foo"), "");
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}
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#endif // CONST_STRINGS
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