X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fframe-unwind.h;h=9507be29fefc3a1cdc6deb5f25f3e4118f47d93d;hb=2117c711ae07700adb57ea5b5ca61e4c32d7e3d2;hp=f82d76366bb26c8ad088728bdf305b6ded60723a;hpb=0b30217134add051e159a192066a1e568ebd837f;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/frame-unwind.h b/gdb/frame-unwind.h
index f82d76366b..9507be29fe 100644
--- a/gdb/frame-unwind.h
+++ b/gdb/frame-unwind.h
@@ -1,6 +1,6 @@
 /* Definitions for a frame unwinder, for GDB, the GNU debugger.
 
-   Copyright (C) 2003-2004, 2007-2012 Free Software Foundation, Inc.
+   Copyright (C) 2003-2014 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -44,7 +44,9 @@ struct value;
 
 /* Given THIS frame, take a whiff of its registers (namely
    the PC and attributes) and if SELF is the applicable unwinder,
-   return non-zero.  Possibly also initialize THIS_PROLOGUE_CACHE.  */
+   return non-zero.  Possibly also initialize THIS_PROLOGUE_CACHE; but
+   only if returning 1.  Initializing THIS_PROLOGUE_CACHE in other
+   cases (0 return, or exception) is invalid.  */
 
 typedef int (frame_sniffer_ftype) (const struct frame_unwind *self,
 				   struct frame_info *this_frame,