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-rw-r--r--gdb/ChangeLog7
-rw-r--r--gdb/common/scoped_restore.h11
2 files changed, 14 insertions, 4 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 327b327..3e86d55 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2017-01-31 Pedro Alves <palves@redhat.com>
+
+ * common/scoped_restore.h
+ (scoped_restore_tmpl::scoped_restore_tmpl): Template on T2, and
+ change the value's parameter type to T2.
+ (make_scoped_restore): Likewise.
+
2017-01-27 Walfred Tedeschi <walfred.tedeschi@intel.com>
Richard Henderson <rth@redhat.com>
diff --git a/gdb/common/scoped_restore.h b/gdb/common/scoped_restore.h
index 0c8c30d..ae7a49f 100644
--- a/gdb/common/scoped_restore.h
+++ b/gdb/common/scoped_restore.h
@@ -47,8 +47,11 @@ class scoped_restore_tmpl : public scoped_restore_base
/* Create a new scoped_restore object that saves the current value
of *VAR, and sets *VAR to VALUE. *VAR will be restored when this
- scoped_restore object is destroyed. */
- scoped_restore_tmpl (T *var, T value)
+ scoped_restore object is destroyed. This is templated on T2 to
+ allow passing VALUEs of types convertible to T.
+ E.g.: T='base'; T2='derived'. */
+ template <typename T2>
+ scoped_restore_tmpl (T *var, T2 value)
: m_saved_var (var),
m_saved_value (*var)
{
@@ -90,8 +93,8 @@ scoped_restore_tmpl<T> make_scoped_restore (T *var)
/* Make a scoped_restore. This is useful because it lets template
argument deduction work. */
-template<typename T>
-scoped_restore_tmpl<T> make_scoped_restore (T *var, T value)
+template<typename T, typename T2>
+scoped_restore_tmpl<T> make_scoped_restore (T *var, T2 value)
{
return scoped_restore_tmpl<T> (var, value);
}