[PATCH v3 21/28] Add frame info check to DW_OP_reg operations

[Zoran Zaric]

From: Zoran Zaric <Zoran.Zaric@amd.com>

After enabling location description to be on a DWARF stack, it is now
needed to check the frame context information validity when creating a
register location description.

gdb/ChangeLog:

	* dwarf2/expr.c (dwarf_expr_context::execute_stack_op): Add
	check_frame_info call for DW_OP_reg operations.
---
 gdb/dwarf2/expr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gdb/dwarf2/expr.c b/gdb/dwarf2/expr.c
index 5bec805a8fb..602a5186cfa 100644
--- a/gdb/dwarf2/expr.c
+++ b/gdb/dwarf2/expr.c
@@ -3270,6 +3270,7 @@ dwarf_expr_context::execute_stack_op (const gdb_byte *op_ptr,
 	case DW_OP_reg31:
 	case DW_OP_regx:
 	  {
+	    ensure_have_frame (this->m_frame, "DW_OP_reg");
 	    ULONGEST result;
 
 	    if (op == DW_OP_regx)
-- 
2.17.1