new testcase

llvm-svn: 38739

clang/test/Preprocessor/macro_paste_hard.c

@@ -0,0 +1,17 @@
+; RUN: clang -E %s | grep '1: aaab 2' &&
+; RUN: clang -E %s | grep '2: 2 baaa' &&
+; RUN: clang -E %s | grep '3: 2 xx'
+
+#define a(n) aaa ## n
+#define b 2
+1: a(b b)   // aaab 2    2 gets expanded, not b.
+
+#undef a
+#undef b
+#define a(n) n ## aaa
+#define b 2
+2: a(b b)   // 2 baaa    2 gets expanded, not b.
+
+#define baaa xx
+3: a(b b)   // 2 xx
+

clang/test/Preprocessor/macro_rparen_scan.c

@@ -0,0 +1,8 @@
+// RUN: clang -E %s | grep '^3 ;$'
+
+/* Right paren scanning, hard case.  Should expand to 3. */
+#define i(x) 3 
+#define a i(yz 
+#define b ) 
+a b ) ; 
+