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

causes gdb to seg fault.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9dac8f2..79578ab 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+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.
+
 2003-06-14  Daniel Jacobowitz  <drow@mvista.com>
 
        * sparc-nat.c (fetch_inferior_registers): Correct

diff --git a/gdb/avr-tdep.c b/gdb/avr-tdep.c
index df1ffdd..e9d5996 100644 (file)
--- a/gdb/avr-tdep.c
+++ b/gdb/avr-tdep.c
@@ -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