Kernel/vterm - Fix clobbering of AltBuf's heap footer

[tpg/acess2.git] / KernelLand / Kernel / drv / vterm_output.c

diff --git a/KernelLand/Kernel/drv/vterm_output.c b/KernelLand/Kernel/drv/vterm_output.c
index 357132c..9ee5f1e 100644 (file)
--- a/KernelLand/Kernel/drv/vterm_output.c
+++ b/KernelLand/Kernel/drv/vterm_output.c
@@ -133,17 +133,15 @@ void VT_int_UpdateCursor( tVTerm *Term, int bShow )
  */
 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
 {
-       tVT_Char        *buffer;
-        int    view_pos, write_pos;
        // Only update if this is the current terminal
        if( Term != gpVT_CurTerm )      return;
        
        switch( Term->Mode )
        {
-       case TERM_MODE_TEXT:
-               view_pos = (Term->Flags & VT_FLAG_ALTBUF) ? 0 : Term->ViewPos;
-               write_pos = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltWritePos : Term->WritePos;
-               buffer = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
+       case TERM_MODE_TEXT: {
+               size_t view_pos = (Term->Flags & VT_FLAG_ALTBUF) ? 0 : Term->ViewPos;
+               size_t write_pos = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltWritePos : Term->WritePos;
+               const tVT_Char *buffer = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
                // Re copy the entire screen?
                if(UpdateAll) {
                        VFS_WriteAt(
@@ -163,7 +161,7 @@ void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
                                &buffer[ofs]
                                );
                }
-               break;
+               break; }
        case TERM_MODE_FB:
                break;
        }