gdb-rhbz795424-bitpos-25of25.patch

;; Fix `GDB cannot access struct member whose offset is larger than 256MB'
;; (RH BZ 795424).
;;=push

http://sourceware.org/ml/gdb-patches/2012-08/msg00562.html

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Hi,

Range bounds for a gdb type can have LONGEST values for low and high
bounds. Fortran range bounds functions however use only int. The larger
ranges don't compile by default on gcc, but it is possible to override
the check in the compiler by using -fno-range-check. As a result, this
check is necessary so that we don't print junk in case of an overflow.

Attached patch does this expansion and also includes a test case that
verifies that the problem is fixed. I have also verified on x86_64 that
this patch does not cause any regressions.

Regards,
Siddhesh

gdb/ChangeLog:

	* f-lang.h (f77_get_upperbound): Return LONGEST.
	(f77_get_lowerbound): Likewise.
	* f-typeprint.c (f_type_print_varspec_suffix): Expand
	UPPER_BOUND and LOWER_BOUND to LONGEST.  Use plongest to format
	print them.
	(f_type_print_base): Expand UPPER_BOUND to LONGEST.  Use
	plongest to format print it.
	* f-valprint.c (f77_get_lowerbound): Return LONGEST.
	(f77_get_upperbound): Likewise.
	(f77_get_dynamic_length_of_aggregate): Expand UPPER_BOUND,
	LOWER_BOUND to LONGEST.
	(f77_create_arrayprint_offset_tbl): Likewise.

testsuite/ChangeLog:

	* gdb.fortran/array-bounds.exp: New test case.
	* gdb.fortran/array-bounds.f: New test case.

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Author: ivanivanov884

gdb/f-lang.h

@@ -47,9 +47,9 @@ struct common_block
   struct symbol *contents[1];
 };
 
-extern int f77_get_upperbound (struct type *);
+extern LONGEST f77_get_upperbound (struct type *);
 
-extern int f77_get_lowerbound (struct type *);
+extern LONGEST f77_get_lowerbound (struct type *);
 
 extern void f77_get_dynamic_array_length (struct type *);
 

gdb/f-typeprint.c

@@ -149,7 +149,7 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
 			     int show, int passed_a_ptr, int demangled_args,
 			     int arrayprint_recurse_level, int print_rank_only)
 {
-  int upper_bound, lower_bound;
+  LONGEST upper_bound, lower_bound;
 
   /* No static variables are permitted as an error call may occur during
      execution of this function.  */
@@ -196,7 +196,7 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
 	{
 	  lower_bound = f77_get_lowerbound (type);
 	  if (lower_bound != 1)	/* Not the default.  */
-	    fprintf_filtered (stream, "%d:", lower_bound);
+	    fprintf_filtered (stream, "%s:", plongest (lower_bound));
 
 	  /* Make sure that, if we have an assumed size array, we
 	       print out a warning and print the upperbound as '*'.  */
@@ -206,7 +206,7 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
 	  else
 	    {
 	      upper_bound = f77_get_upperbound (type);
-	      fprintf_filtered (stream, "%d", upper_bound);
+	      fprintf_filtered (stream, "%s", plongest (upper_bound));
 	    }
 	}
 
@@ -278,7 +278,7 @@ void
 f_type_print_base (struct type *type, struct ui_file *stream, int show,
 		   int level)
 {
-  int upper_bound;
+  LONGEST upper_bound;
   int index;
 
   QUIT;
@@ -370,7 +370,7 @@ f_type_print_base (struct type *type, struct ui_file *stream, int show,
       else
 	{
 	  upper_bound = f77_get_upperbound (type);
-	  fprintf_filtered (stream, "character*%d", upper_bound);
+	  fprintf_filtered (stream, "character*%s", plongest (upper_bound));
 	}
       break;
 

gdb/f-valprint.c

@@ -41,7 +41,7 @@ LONGEST f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2];
 /* Array which holds offsets to be applied to get a row's elements
    for a given array.  Array also holds the size of each subarray.  */
 
-int
+LONGEST
 f77_get_lowerbound (struct type *type)
 {
   if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
@@ -50,7 +50,7 @@ f77_get_lowerbound (struct type *type)
   return TYPE_ARRAY_LOWER_BOUND_VALUE (type);
 }
 
-int
+LONGEST
 f77_get_upperbound (struct type *type)
 {
   if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))