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vla: resolve dynamic bounds if value contents is a constant byte-sequence

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A variable location might be a constant value and therefore no inferior memory
access is needed to read the content. In this case try to resolve the type
bounds.

	* findvar.c (default_read_var_value): Resolve dynamic bounds if location
	points to a constant blob.
This commit is contained in:
Sanimir Agovic 2013-11-26 14:35:43 +00:00
parent e1969afbd4
commit 92b09522dc
2 changed files with 16 additions and 1 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2014-04-11 Sanimir Agovic <sanimir.agovic@intel.com>
* findvar.c (default_read_var_value): Resolve dynamic bounds if location
points to a constant blob.
2014-04-11 Sanimir Agovic <sanimir.agovic@intel.com>
* dwarf2read.c (read_subrange_type): Convert DW_AT_count to a dynamic

12
gdb/findvar.c
View file

@ -437,7 +437,12 @@ default_read_var_value (struct symbol *var, struct frame_info *frame)
switch (SYMBOL_CLASS (var))
{
case LOC_CONST:
/* Put the constant back in target format. */
if (is_dynamic_type (type))
{
/* Value is a constant byte-sequence and needs no memory access. */
type = resolve_dynamic_type (type, /* Unused address. */ 0);
}
/* Put the constant back in target format. */
v = allocate_value (type);
store_signed_integer (value_contents_raw (v), TYPE_LENGTH (type),
gdbarch_byte_order (get_type_arch (type)),
@ -464,6 +469,11 @@ default_read_var_value (struct symbol *var, struct frame_info *frame)
return v;
case LOC_CONST_BYTES:
if (is_dynamic_type (type))
{
/* Value is a constant byte-sequence and needs no memory access. */
type = resolve_dynamic_type (type, /* Unused address. */ 0);
}
v = allocate_value (type);
memcpy (value_contents_raw (v), SYMBOL_VALUE_BYTES (var),
TYPE_LENGTH (type));