2003-06-14  Theodore A. Roth  <troth@openavr.org>

	* avr-tdep.c (avr_scan_prologue): Fix to avoid a buffer over run which
	causes gdb to seg fault.

Index: avr-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/avr-tdep.c,v
retrieving revision 1.54
diff -u -p -r1.54 avr-tdep.c
--- avr-tdep.c	13 Jun 2003 17:52:28 -0000	1.54
+++ avr-tdep.c	14 Jun 2003 20:26:41 -0000
@@ -486,7 +486,7 @@ avr_scan_prologue (struct frame_info *fi
      frame pointer, adjust the stack pointer, and save registers.  */
 
   get_frame_extra_info (fi)->framesize = 0;
-  prologue_len = prologue_end - prologue_start;
+  prologue_len = min (prologue_end - prologue_start, AVR_MAX_PROLOGUE_SIZE);
   read_memory (prologue_start, prologue, prologue_len);
 
   /* Scanning main()'s prologue