Don't let .gdb_history file cause failures

I had a .gdb_history file in my testsuite directory in the build tree,
and this provoked a failure in gdbhistsize-history.exp.  It seems
simple to prevent this file from causing a failure.

diff --git a/gdb/testsuite/gdb.base/gdbhistsize-history.exp b/gdb/testsuite/gdb.base/gdbhistsize-history.exp
index 59fd2d0c143f189bb2a677ea011d78f2a00474d6..00c3ea4dde205692f3647e704f454741097943a7 100644 (file)
--- a/gdb/testsuite/gdb.base/gdbhistsize-history.exp
+++ b/gdb/testsuite/gdb.base/gdbhistsize-history.exp
@@ -35,6 +35,10 @@ proc test_histsize_history_setting { histsize size { env_var "GDBHISTSIZE" } } {
        unset -nocomplain env(GDBHISTFILE)
        unset -nocomplain env(GDBHISTSIZE)
 
+       # Ensure we don't accidentally pick up a .gdb_history from the
+       # testsuite directory.
+       set env(GDBHISTFILE) [standard_output_file .gdb_history]
+
        set env($env_var) $histsize
 
        with_test_prefix "histsize=$histsize" {