[frontend] Don't put a PCH/PTH filename into the set of includes in the preprocessor options;

since only one of them is allowed in command-line, process them separately.

Otherwise, if more than one is specified in the command-line, one is processed normally
and the others are going to be treated and included as header files.

Related to radar://13140508

llvm-svn: 174385

1 files changed, 18 insertions, 0 deletions

diff --git a/clang/test/PCH/multiple-include-pch.c b/clang/test/PCH/multiple-include-pch.c
new file mode 100644
index 00000000000..1ef17b9c675
--- /dev/null
+++ b/clang/test/PCH/multiple-include-pch.c
@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -emit-pch -o %t1.pch %s
+// RUN: %clang_cc1 -emit-pch -o %t2.pch %s
+// RUN: %clang_cc1 %s -include-pch %t1.pch -include-pch %t2.pch -verify
+
+#ifndef HEADER
+#define HEADER
+
+extern int x;
+
+#else
+
+#warning parsed this
+// expected-warning@-1 {{parsed this}}
+int foo() {
+  return x;
+}
+
+#endif