re PR fortran/89724 (Fortran diagnostics give wrong line number because of…

re PR fortran/89724 (Fortran diagnostics give wrong line number because of math-vector-fortran.h header file)

	PR fortran/89724
	* scanner.c (load_line): Remove linenum and current_line static
	variables, add warned_tabs automatic variable.  Use current_file->line
	instead of current_line and warned_tabs boolean to avoid diagnosing
	tabs multiple times on the same line.

	* gfortran.dg/continuation_15.f90: New test.
	* gfortran.dg/continuation_16.f90: New test.

From-SVN: r269734

gcc/fortran/ChangeLog

+2019-03-16  Jakub Jelinek  <jakub@redhat.com>
+
+	PR fortran/89724
+	* scanner.c (load_line): Remove linenum and current_line static
+	variables, add warned_tabs automatic variable.  Use current_file->line
+	instead of current_line and warned_tabs boolean to avoid diagnosing
+	tabs multiple times on the same line.
+
 2019-03-16  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/84394

gcc/fortran/scanner.c

@@ -1738,12 +1738,12 @@ gfc_gobble_whitespace (void)
 static int
 load_line (FILE *input, gfc_char_t **pbuf, int *pbuflen, const int *first_char)
 {
-  static int linenum = 0, current_line = 1;
   int c, maxlen, i, preprocessor_flag, buflen = *pbuflen;
   int trunc_flag = 0, seen_comment = 0;
   int seen_printable = 0, seen_ampersand = 0, quoted = ' ';
   gfc_char_t *buffer;
   bool found_tab = false;
+  bool warned_tabs = false;
 
   /* Determine the maximum allowed line length.  */
   if (gfc_current_form == FORM_FREE)
@@ -1793,10 +1793,10 @@ load_line (FILE *input, gfc_char_t **pbuf, int *pbuflen, const int *first_char)
 	    {
 	      if (pedantic)
 		gfc_error_now ("%<&%> not allowed by itself in line %d",
-			       current_line);
+			       current_file->line);
 	      else
 		gfc_warning_now (0, "%<&%> not allowed by itself in line %d",
-				 current_line);
+				 current_file->line);
 	    }
 	  break;
 	}
@@ -1850,12 +1850,12 @@ load_line (FILE *input, gfc_char_t **pbuf, int *pbuflen, const int *first_char)
 	{
 	  found_tab = true;
 
-	  if (warn_tabs && seen_comment == 0 && current_line != linenum)
+	  if (warn_tabs && seen_comment == 0 && !warned_tabs)
 	    {
-	      linenum = current_line;
+	      warned_tabs = true;
 	      gfc_warning_now (OPT_Wtabs,
 			       "Nonconforming tab character in column %d "
-			       "of line %d", i+1, linenum);
+			       "of line %d", i + 1, current_file->line);
 	    }
 
 	  while (i < 6)
@@ -1934,7 +1934,6 @@ next_char:
 
   *buffer = '\0';
   *pbuflen = buflen;
-  current_line++;
 
   return trunc_flag;
 }

gcc/testsuite/ChangeLog

+2019-03-16  Jakub Jelinek  <jakub@redhat.com>
+
+	PR fortran/89724
+	* gfortran.dg/continuation_15.f90: New test.
+	* gfortran.dg/continuation_16.f90: New test.
+
 2019-03-16  John David Anglin  <danglin@gcc.gnu.org>
 
 	* g++.dg/cpp0x/pr84497.C: Restore dg-require-weak.

gcc/testsuite/gfortran.dg/continuation_15.f90

+! PR fortran/89724
+! { dg-do compile }
+! { dg-options "-std=f95" }
+
+include 'continuation_9.f90'
+
+! { dg-warning "not allowed by itself in line 3" "" { target *-*-* } 0 }
+! { dg-warning "not allowed by itself in line 4" "" { target *-*-* } 0 }
+! { dg-warning "not allowed by itself in line 5" "" { target *-*-* } 0 }

gcc/testsuite/gfortran.dg/continuation_16.f90

+! PR fortran/89724
+! { dg-do compile }
+! { dg-options "-std=f95 -nostdinc -fpre-include=simd-builtins-1.h" }
+  &  
+&
+ &
+end
+! { dg-warning "not allowed by itself in line 4" "" { target *-*-* } 0 }
+! { dg-warning "not allowed by itself in line 5" "" { target *-*-* } 0 }
+! { dg-warning "not allowed by itself in line 6" "" { target *-*-* } 0 }