http://sourceware.org/ml/gdb-patches/2012-07/msg00551.html

Re-evaluate floating variables as part of variable invalidate to remove
references to type structures that might have been freed.

1 files changed, 9 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.mi/mi-var-invalidate.exp b/gdb/testsuite/gdb.mi/mi-var-invalidate.exp
index 3ecbbdf..1f16f88 100644
--- a/gdb/testsuite/gdb.mi/mi-var-invalidate.exp
+++ b/gdb/testsuite/gdb.mi/mi-var-invalidate.exp
@@ -61,6 +61,9 @@ mi_runto do_locals_tests
 # Desc: create local variables
 mi_create_varobj linteger linteger "create local variable linteger"
 
+# Desc: create floating variable
+mi_create_floating_varobj float_simple array "create floating variable"
+
 #
 # Reload the same binary.
 # Global variable should remain, local should be invalidated.
@@ -69,6 +72,12 @@ mi_delete_breakpoints
 mi_gdb_load ${binfile_bis}
 mi_runto main
 
+# Change format of floating variable immediately after reload reveals a
+# bug where gdb still uses a free'd pointer.
+mi_gdb_test "-var-set-format float_simple hexadecimal" \
+        "\\^done,format=\"hexadecimal\",value=\"\\\[-1\\\]\"" \
+       "set format variable float_simple"
+
 # Check local variable is "invalid".
 mi_gdb_test "-var-update linteger" \
 	"\\^done,changelist=\\\[\{name=\"linteger\",in_scope=\"invalid\",has_more=\"0\"\}\\\]" \