Fix shared library load in gdb.base/global-var-nested-by-dso.exp.

[deliverable/binutils-gdb.git] / gdb / ada-lang.c

diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index a514f655bdceac0352667e63f3e345f504f9b773..49f3d9a13269f324ad8d80feba1d99c9a1b8e1da 100644 (file)
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -2757,14 +2757,27 @@ ada_value_subscript (struct value *arr, int arity, struct value **ind)
 
 /* Assuming ARR is a pointer to a GDB array, the value of the element
    of *ARR at the ARITY indices given in IND.
-   Does not read the entire array into memory.  */
+   Does not read the entire array into memory.
+
+   Note: Unlike what one would expect, this function is used instead of
+   ada_value_subscript for basically all non-packed array types.  The reason
+   for this is that a side effect of doing our own pointer arithmetics instead
+   of relying on value_subscript is that there is no implicit typedef peeling.
+   This is important for arrays of array accesses, where it allows us to
+   preserve the fact that the array's element is an array access, where the
+   access part os encoded in a typedef layer.  */
 
 static struct value *
 ada_value_ptr_subscript (struct value *arr, int arity, struct value **ind)
 {
   int k;
+  struct value *array_ind = ada_value_ind (arr);
   struct type *type
-    = check_typedef (value_enclosing_type (ada_value_ind (arr)));
+    = check_typedef (value_enclosing_type (array_ind));
+
+  if (TYPE_CODE (type) == TYPE_CODE_ARRAY
+      && TYPE_FIELD_BITSIZE (type, 0) > 0)
+    return value_subscript_packed (array_ind, arity, ind);
 
   for (k = 0; k < arity; k += 1)
     {
@@ -11432,24 +11445,29 @@ scan_discrim_bound (const char *str, int k, struct value *dval, LONGEST * px,
 {
   static char *bound_buffer = NULL;
   static size_t bound_buffer_len = 0;
-  const char *pend, *bound;
+  const char *pstart, *pend, *bound;
   struct value *bound_val;
 
   if (dval == NULL || str == NULL || str[k] == '\0')
     return 0;
 
-  pend = strstr (str + k, "__");
+  pstart = str + k;
+  pend = strstr (pstart, "__");
   if (pend == NULL)
     {
-      bound = str + k;
+      bound = pstart;
       k += strlen (bound);
     }
   else
     {
-      GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1);
+      int len = pend - pstart;
+
+      /* Strip __ and beyond.  */
+      GROW_VECT (bound_buffer, bound_buffer_len, len + 1);
+      strncpy (bound_buffer, pstart, len);
+      bound_buffer[len] = '\0';
+
       bound = bound_buffer;
-      strncpy (bound_buffer, str + k, pend - (str + k));
-      bound_buffer[pend - (str + k)] = '\0';
       k = pend - str;
     }