re PR fortran/66039 (ICE on incomplete parentheses at rewind, flush, endfile, backspace)

2015-05-18  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/66039
	* io.c (match_filepos): Check for incomplete/mangled REWIND, FLUSH,
	BACKSPACE, and ENDFILE statements

2015-05-18  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/66039
	* gfortran.dg/filepos1.f90: New test

From-SVN: r223315

gcc/fortran/ChangeLog

 2015-05-18  Steven G. Kargl  <kargl@gcc.gnu.org>
 
+	PR fortran/66039
+	* io.c (match_filepos): Check for incomplete/mangled REWIND, FLUSH,
+	BACKSPACE, and ENDFILE statements
+
+2015-05-18  Steven G. Kargl  <kargl@gcc.gnu.org>
+
 	PR fortran/64925
 	* symbol.c(check_conflict):  Check for a conflict between a dummy
 	argument and an internal procedure name.

gcc/fortran/io.c

@@ -2382,9 +2382,7 @@ match_filepos (gfc_statement st, gfc_exec_op op)
   if (m == MATCH_NO)
     {
       m = gfc_match_expr (&fp->unit);
-      if (m == MATCH_ERROR)
-	goto done;
-      if (m == MATCH_NO)
+      if (m == MATCH_ERROR || m == MATCH_NO)
 	goto syntax;
     }
 

gcc/testsuite/ChangeLog

 2015-05-18  Steven G. Kargl  <kargl@gcc.gnu.org>
 
+	PR fortran/66039
+	* gfortran.dg/filepos1.f90: New test
+
+2015-05-18  Steven G. Kargl  <kargl@gcc.gnu.org>
+
 	PR fortran/64925
 	* gfortran.dg/pr64925.f90: New test.
 

gcc/testsuite/gfortran.dg/filepos1.f90

+! { dg-do compile }
+! PR fortran/66039
+!
+! Original code from Gerhard Steinmetz
+! <gerhard dot steinmetz dot fortran at t-online dot de>
+subroutine p1
+   rewind ((     ! { dg-error "Syntax error in REWIND" }
+   rewind (-     ! { dg-error "Syntax error in REWIND" }
+end subroutine p1
+
+subroutine p2
+   flush ((      ! { dg-error "Syntax error in FLUSH" }
+   flush (-      ! { dg-error "Syntax error in FLUSH" }
+end subroutine p2
+
+subroutine p4
+   backspace ((   ! { dg-error "Syntax error in BACKSPACE" }
+   backspace (-   ! { dg-error "Syntax error in BACKSPACE" }
+end subroutine p4
+
+subroutine p3
+   endfile ((     ! { dg-error "Expecting END SUBROUTINE" }
+   endfile (-     ! { dg-error "Expecting END SUBROUTINE" }
+end subroutine p3
+