From: Stan Shebs <shebs@codesourcery.com>
Date: Thu, 18 Mar 2010 01:47:33 +0000 (+0000)
Subject: 2010-03-17 Stan Shebs  <stan@codesourcery.com>
X-Git-Tag: cygwin-1_7_3-release~101
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3a96536b1719be040188657f7cb1afb83ab914ca;p=external%2Fbinutils.git

2010-03-17 Stan Shebs  <stan@codesourcery.com>

	* ax-gdb.c (require_rvalue): Disallow non-scalars.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2b5e242..f961562 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,7 @@
 2010-03-17 Stan Shebs  <stan@codesourcery.com>
 
+	* ax-gdb.c (require_rvalue): Disallow non-scalars.
+
 	* infcall.c: Include tracepoint.h.
 	(call_function_by_hand): Disallow calls in tfind mode.
 	* infcmd.c: Include tracepoint.h.
diff --git a/gdb/ax-gdb.c b/gdb/ax-gdb.c
index 091fd95..4307de3 100644
--- a/gdb/ax-gdb.c
+++ b/gdb/ax-gdb.c
@@ -745,6 +745,15 @@ gen_int_literal (struct agent_expr *ax, struct axs_value *value, LONGEST k,
 static void
 require_rvalue (struct agent_expr *ax, struct axs_value *value)
 {
+  /* Only deal with scalars, structs and such may be too large
+     to fit in a stack entry.  */
+  value->type = check_typedef (value->type);
+  if (TYPE_CODE (value->type) == TYPE_CODE_ARRAY
+      || TYPE_CODE (value->type) == TYPE_CODE_STRUCT
+      || TYPE_CODE (value->type) == TYPE_CODE_UNION
+      || TYPE_CODE (value->type) == TYPE_CODE_FUNC)
+    error ("Value not scalar: cannot be an rvalue.");
+
   switch (value->kind)
     {
     case axs_rvalue: