gdb: make timestamped_file implement write_async_safe

Trying to use "set debug linux-nat 1", I get an internal error:

    /home/smarchi/src/binutils-gdb/gdb/ui-file.h:70: internal-error: write_async_safe: write_async_safe

The problem is that timestamped_file doesn't implement write_async_safe,
which linux-nat's sigchld_handler uses.  Implement it.

Change-Id: I830981010c6119f13ae673605ed015cced0f5ee8

diff --git a/gdb/ui-file.h b/gdb/ui-file.h
index e420555b8a6d867c9230535ee4cb63542a518c36..bffdeaa28c4bb35595a6192c68da62ad12ebd6ff 100644 (file)
--- a/gdb/ui-file.h
+++ b/gdb/ui-file.h
@@ -405,6 +405,9 @@ public:
   bool can_emit_style_escape () override
   { return m_stream->can_emit_style_escape (); }
 
+  void write_async_safe (const char *buf, long length_buf) override
+  { return m_stream->write_async_safe (buf, length_buf); }
+
   DISABLE_COPY_AND_ASSIGN (timestamped_file);
 
   void write (const char *buf, long len) override;