Re: BLOCK_INPUT on Mac OS X

[Stefan <monnier@iro.umontreal.ca>]

>> Can you try and figure out where in the C code is Emacs looping?  A
>> well placed QUIT in there should do the trick.

> It seems to be looping in `emacs_read' called from `Fcall_process'.
> Here's the backtrace.  I believe this can also be reproducible in
> other "SIGIO systems".

Can you try the patch below?
Beware, IIRC, if emacs_read is ever called somewhere where BLOCK_INPUT is
set, this could introduce other problems.


        Stefan


--- orig/src/sysdep.c
+++ mod/src/sysdep.c
@@ -1,6 +1,6 @@
 /* Interfaces to system-dependent kernel and library entries.
-   Copyright (C) 1985, 86,87,88,93,94,95,1999,2000,01,2003
-   Free Software Foundation, Inc.
+   Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999,
+     2000, 2001, 2003, 2004  Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -3258,7 +3258,8 @@
   register int rtnval;
 
   while ((rtnval = read (fildes, buf, nbyte)) == -1
-	 && (errno == EINTR));
+	 && (errno == EINTR))
+    QUIT;
   return (rtnval);
 }