re PR preprocessor/6780 (Incorrect diagnosis of token pasting)

PR preprocessor/6780
	* cppmacro.c (enter_macro_context): Clear state.angled_headers.
testsuite:
	* gcc.dg/cpp/paste12.c: New test.

From-SVN: r53851

gcc/ChangeLog

@@ -1,3 +1,8 @@
+2002-05-24  Neil Booth  <neil@daikokuya.demon.co.uk>
+
+	PR preprocessor/6780
+	* cppmacro.c (enter_macro_context): Clear state.angled_headers.
+
 2002-05-24  Jim Blandy  <jimb@redhat.com>
 
 	* dwarf2out.c (dwarf2out_finish): Don't forget to emit a final

gcc/cppmacro.c

@@ -660,6 +660,8 @@ enter_macro_context (pfile, node)
   /* The presence of a macro invalidates a file's controlling macro.  */
   pfile->mi_valid = false;
 
+  pfile->state.angled_headers = false;
+
   /* Handle standard macros.  */
   if (! (node->flags & NODE_BUILTIN))
     {

gcc/testsuite/ChangeLog

@@ -1,3 +1,7 @@
+2002-05-24  Neil Booth  <neil@daikokuya.demon.co.uk>
+
+	* gcc.dg/cpp/paste12.c: New test.
+
 2002-05-23  Neil Booth  <neil@daikokuya.demon.co.uk>
 
 	* g++.dg/parse/named_ops.C: New test.

gcc/testsuite/gcc.dg/cpp/paste12.c

@@ -0,0 +1,8 @@
+/* { dg-do preprocess } */
+
+/* Test correct diagnostics when pasting in #include.
+   Source: PR preprocessor/6780.  */
+
+#define inc2(a,b) <##a.b>
+#define INC(X) inc2(X,h)
+#include INC(stdio) /* { dg-error "pasting \"<\" and \"stdio\" does not" } */