Fix crashes in a text-mode session on Windows.

 src/w32console.c (initialize_w32_display): Return the dimensions of
 the console window via 2 additional arguments, not via the current
 frame.  This avoids crashes due to overrunning the bounds of
 frame's decode_mode_spec_buffer, which is not resized following
 the change of the frame dimensions from the initial 10x10.
 src/w32term.h (w32_initialize_display_info): Adjust prototype.
 src/term.c (init_tty): Take dimensions of the frame from the values
 returned by initialize_w32_display.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/term.c b/src/term.c
index 28b944c6436..0bcef55947a 100644
--- a/src/term.c
+++ b/src/term.c
@@ -3189,12 +3189,13 @@ use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
 #ifdef WINDOWSNT
   {
     struct frame *f = XFRAME (selected_frame);
+    int height, width;
 
-    initialize_w32_display (terminal);
+    initialize_w32_display (terminal, &width, &height);
 
-    FrameRows (tty) = FRAME_LINES (f);
-    FrameCols (tty) = FRAME_COLS (f);
-    tty->specified_window = FRAME_LINES (f);
+    FrameRows (tty) = height;
+    FrameCols (tty) = width;
+    tty->specified_window = height;
 
     FRAME_VERTICAL_SCROLL_BAR_TYPE (f) = vertical_scroll_bar_none;
     terminal->char_ins_del_ok = 1;