rewrite-includes: Rewrite __has_include(_next) to get rid of a host dependency.
This broke e.g. compiling a crash report from a glibc system on Darwin. Sadly,
the implementation had to game the lexer a lot as we're not using a real
preprocessor here. It also doesn't handle special cases like arbitrary macros in
__has_include, but since this macro isn't common outside of clang's headers we
can get away with that.
Fixes PR14422.
Differential Revision: http://llvm-reviews.chandlerc.com/D594
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179616 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Frontend/rewrite-includes-invalid-hasinclude.c b/test/Frontend/rewrite-includes-invalid-hasinclude.c
new file mode 100644
index 0000000..e32d6ad
--- /dev/null
+++ b/test/Frontend/rewrite-includes-invalid-hasinclude.c
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 -E -frewrite-includes -DFIRST -I %S/Inputs %s -o - | FileCheck -strict-whitespace %s
+
+#if __has_include bar.h
+#endif
+
+#if __has_include(bar.h)
+#endif
+
+#if __has_include(<bar.h)
+#endif
+
+// CHECK: #if __has_include bar.h
+// CHECK: #endif
+// CHECK: #if __has_include(bar.h)
+// CHECK: #endif
+// CHECK: #if __has_include(<bar.h)
+// CHECK: #endif