Fix PR 4489, a PCH crash during de-serialization.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74664 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/PCH/pr4489.c b/test/PCH/pr4489.c
new file mode 100644
index 0000000..696da5b
--- /dev/null
+++ b/test/PCH/pr4489.c
@@ -0,0 +1,20 @@
+// RUN: clang -x c-header -o %t.pch %s &&
+// RUN: clang -include %t -x c /dev/null -emit-llvm -S -o -
+// PR 4489: Crash with PCH
+
+typedef struct _IO_FILE FILE;
+extern int fprintf (struct _IO_FILE *__restrict __stream,
+ __const char *__restrict __format, ...);
+
+int x(void)
+{
+ switch (1) {
+ case 2: ;
+ int y = 0;
+ }
+}
+
+void y(void) {
+ extern char z;
+ fprintf (0, "a");
+}
\ No newline at end of file