Check that thread stack temps are not already enabled before enabling them.

This fixes a regression introduced by 6c659fc2c7cd2da6d2b9a3d7c38597ad3821832a.

gdb/ChangeLog:

	* eval.c (evaluate_subexp): Check that thread stack temporaries
	are not already enabled before enabling them.

2 files changed, 7 insertions, 1 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index c35f0ae..4112438 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2014-11-29  Siva Chandra Reddy  <sivachandra@google.com>
+
+	* eval.c (evaluate_subexp): Check that the thread stack	temporaries
+	are not already enabled before enabling them.
+
 2014-11-29  Yao Qi  <yao@codesourcery.com>
 
 	* arm-tdep.c (arm_analyze_prologue): Move local variables
diff --git a/gdb/eval.c b/gdb/eval.c
index a13793c..c2ab879 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -69,7 +69,8 @@ evaluate_subexp (struct type *expect_type, struct expression *exp,
   int cleanup_temps = 0;
 
   if (*pos == 0 && target_has_execution
-      && exp->language_defn->la_language == language_cplus)
+      && exp->language_defn->la_language == language_cplus
+      && !thread_stack_temporaries_enabled_p (inferior_ptid))
     {
       cleanups = enable_thread_stack_temporaries (inferior_ptid);
       cleanup_temps = 1;