Add testcase for macros with commas in comment

CHANGES.current

@@ -7,6 +7,9 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
 Version 4.0.0 (in progress)
 ===========================
 
+2017-04-27: redbrain
+            Issue #974, Patch #976 - Fix preprocessor handling of macros with commas in a comment.
+
 2017-04-21: tamuratak
             [Ruby] #964 - Add shared_ptr director typemaps.
 

Examples/test-suite/preproc.i

@@ -370,3 +370,20 @@ int methodX(int x);
 int methodX(int x) { return x+100; }
 %}
 
+// Comma in macro - Github issue #974
+%inline %{
+#define __attribute__(x)
+#define TCX_PACKED(d) d __attribute__ ((__packed__))
+
+TCX_PACKED (typedef struct tcxMessageTestImpl
+{
+    int mHeader; /**< comment */
+}) tcxMessageTest;
+
+
+TCX_PACKED (typedef struct tcxMessageBugImpl
+{
+    int mBid; /**< Bid price and size, check PresentMap if available in message */
+}) tcxMessageBug;
+%}
+

Examples/test-suite/python/preproc_runme.py

@@ -14,3 +14,6 @@ if 2 * preproc.one != preproc.two:
 
 if preproc.methodX(99) != 199:
     raise RuntimeError
+
+t1 = preproc.tcxMessageTest()
+t2 = preproc.tcxMessageBug()