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| author | Aaron Ballman <aaron@aaronballman.com> | 2017-12-07 21:37:49 +0000 |
|---|---|---|
| committer | Aaron Ballman <aaron@aaronballman.com> | 2017-12-07 21:37:49 +0000 |
| commit | 48f5f4d895ecada915677f528d493814a76e890d (patch) | |
| tree | f4d95612ffc58c9a8f327bcd2f448e64bb3b33c9 /clang/test/Preprocessor/has_c_attribute.c | |
| parent | 095d4ea4bf4eb13efeeed8b0f1faf93e205ab021 (diff) | |
| download | bcm5719-llvm-48f5f4d895ecada915677f528d493814a76e890d.tar.gz bcm5719-llvm-48f5f4d895ecada915677f528d493814a76e890d.zip | |
Add support for the __has_c_attribute builtin preprocessor macro.
This behaves similar to the __has_cpp_attribute builtin macro in that it allows users to detect whether an attribute is supported with the [[]] spelling syntax, which can be enabled in C with -fdouble-square-bracket-attributes.
llvm-svn: 320088
Diffstat (limited to 'clang/test/Preprocessor/has_c_attribute.c')
| -rw-r--r-- | clang/test/Preprocessor/has_c_attribute.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/clang/test/Preprocessor/has_c_attribute.c b/clang/test/Preprocessor/has_c_attribute.c new file mode 100644 index 00000000000..f9e1a5841b4 --- /dev/null +++ b/clang/test/Preprocessor/has_c_attribute.c @@ -0,0 +1,12 @@ +// RUN: %clang_cc1 -fdouble-square-bracket-attributes -std=c11 -E %s -o - | FileCheck %s
+
+// CHECK: has_fallthrough
+#if __has_c_attribute(fallthrough)
+ int has_fallthrough();
+#endif
+
+// CHECK: does_not_have_selectany
+#if !__has_c_attribute(selectany)
+ int does_not_have_selectany();
+#endif
+
|
