re PR c/28649 (Poor error recovery of C parser)

PR c/28649
	* c-parser.c (c_parser_compound_statement_nostart): Reset
	parser->error after each statement.

	* gcc.dg/parse-error-1.c: New test.
	* gcc.dg/parse-error-2.c: New test.
	* gcc.dg/cpp/digraph2.c: Add error-marker.
	* gcc.dg/noncompile/920923-1.c: Likewise.

From-SVN: r116157

gcc/ChangeLog

@@ -1,3 +1,9 @@
+2006-08-15  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c/28649
+	* c-parser.c (c_parser_compound_statement_nostart): Reset
+	parser->error after each statement.
+
 2006-08-15  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/28713

gcc/c-parser.c

@@ -3486,6 +3486,8 @@ c_parser_compound_statement_nostart (c_parser *parser)
 	  last_stmt = true;
 	  c_parser_statement_after_labels (parser);
 	}
+
+      parser->error = false;
     }
   if (last_label)
     error ("label at end of compound statement");

gcc/testsuite/ChangeLog

@@ -1,3 +1,11 @@
+2006-08-15  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c/28649
+	* gcc.dg/parse-error-1.c: New test.
+	* gcc.dg/parse-error-2.c: New test.
+	* gcc.dg/cpp/digraph2.c: Add error-marker.
+	* gcc.dg/noncompile/920923-1.c: Likewise.
+
 2006-08-14  Andrew Pinski  <pinskia@physics.uc.edu>
 
 	PR c/27490

gcc/testsuite/gcc.dg/cpp/digraph2.c

@@ -13,7 +13,7 @@ int main (int argc, char *argv[])
 
 /* Place this after main () so we get to test both the compiler above
    and the preprocessor below.  */
-%:define glue
+%:define glue                   /* { dg-error "expected declaration" } */
 #ifdef glue
 #error glue is defined!
 #endif

gcc/testsuite/gcc.dg/noncompile/920923-1.c

@@ -56,7 +56,7 @@ caddr_t v_addr;			/* { dg-error "expected" } */
 {
      register prec_t bucket;
      register caddr_t p_addr;	/* { dg-error "expected|undeclared" } */
-     bucket = mem_hash+((((v_addr)>>ITEMBITS))&hash_mask);
+     bucket = mem_hash+((((v_addr)>>ITEMBITS))&hash_mask);  /* { dg-error "undeclared" } */
      do {
 	  if (bucket->v_addr == ((v_addr)>>ITEMBITS) {	/* { dg-error "expected|undeclared|no member" } */
 	       if(!(bucket->perm_set&va_op))

gcc/testsuite/gcc.dg/parse-error-1.c

@@ -0,0 +1,10 @@
+/* PR c/28649 */
+/* { dg-do compile } */
+
+void foo()
+{
+   +;  /* { dg-error "expected expression" } */
+   +;  /* { dg-error "expected expression" } */
+}
+
+int +;  /* { dg-error "expected identifier" } */

gcc/testsuite/gcc.dg/parse-error-2.c

@@ -0,0 +1,14 @@
+/* PR c/28649 */
+/* { dg-do compile } */
+
+void foo()
+{
+  +;  /* { dg-error "expected expression" } */
+}
+
+int i;
+
+void bar()
+{
+  i++;  /* { dg-bogus "undeclared" } */
+}