Update.

2000-07-29  Greg McGary  <greg@mcgary.org>

	* Rules (test-bp-inputs, make-test-out): New variables.
	($(objpfx)%-bp.out): New rule.
	($(objpfx)%.out): Rewrite in terms of new variables.

	* libio/iovswscanf.c (vswscanf): Pass _IO_FILE_plus pointer to
	internal function that uses vtable.
	* libio/vsnprintf.c (_IO_vsnprintf): Likewise.
	* libio/vswprintf.c (_IO_vswprintf): Likewise.

	* malloc/malloc.c (mem2chunk): Define in terms of chunk_at_offset.
	(malloc_extend_top): Convert brk to chunk using chunk_at_offset.
	(chunk_align): Likewise.

	* time/asctime.c (ab_day_name, ab_month_name): Rewrite expression
	in a way that conforms to decl, and avoids spurious bounds violation.

	* sysdeps/arm/frame.h (struct layout): Make pointers __unbounded.
	* sysdeps/generic/frame.h: Likewise.
	* sysdeps/generic/backtrace.c (ADVANCE_STACK_FRAME): Wrap bounds
	around return value.
	(__backtrace): Qualify frame-pointer chain and return address
	pointers as __unbounded.  Wrap bounds around variable `current'.
	* sysdeps/generic/segfault.c (ADVANCE_STACK_FRAME): Wrap bounds
	around return value.
	(catch_segfault): Qualify frame-pointer chain and return address
	pointers as __unbounded.  Wrap bounds around variable `current'.
	* sysdeps/i386/backtrace.c (struct layout): Make pointers __unbounded.
	(ADVANCE_STACK_FRAME): Wrap bounds around return value.
	* sysdeps/powerpc/backtrace.c (struct layout): Make pointers __unbounded.
	(__backtrace): Qualify frame-pointer chain and return address
	pointers as __unbounded.  Wrap bounds around variable `current'.

	* sysdeps/i386/addmul_1.S: s2_limb is scalar so remove bounds check.
	* sysdeps/i386/mul_1.S: Likewise.
	* sysdeps/i386/submul_1.S: Likewise.
	* sysdeps/i386/i586/addmul_1.S: Likewise.
	* sysdeps/i386/i586/mul_1.S: Add bounds checks.
	* sysdeps/i386/i586/submul_1.S: Likewise.

1 files changed, 6 insertions, 5 deletions

diff --git a/sysdeps/generic/backtrace.c b/sysdeps/generic/backtrace.c
index b9242b587b..f743b56b4b 100644
--- a/sysdeps/generic/backtrace.c
+++ b/sysdeps/generic/backtrace.c
@@ -1,5 +1,5 @@
 /* Return backtrace of current program state.  Generic version.
-   Copyright (C) 1998 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
@@ -22,6 +22,7 @@
 #include <signal.h>
 #include <frame.h>
 #include <sigcontextinfo.h>
+#include <bp-checks.h>
 
 /* This is a global variable set at program start time.  It marks the
    highest used stack address.  */
@@ -54,7 +55,7 @@ extern void *__libc_stack_end;
 /* By default assume the `next' pointer in struct layout points to the
    next struct layout.  */
 #ifndef ADVANCE_STACK_FRAME
-# define ADVANCE_STACK_FRAME(next) ((struct layout *) (next))
+# define ADVANCE_STACK_FRAME(next) BOUNDED_1 ((struct layout *) (next))
 #endif
 
 int
@@ -63,15 +64,15 @@ __backtrace (array, size)
      int size;
 {
   struct layout *current;
-  void *top_frame;
-  void *top_stack;
+  void *__unbounded top_frame;
+  void *__unbounded top_stack;
   int cnt = 0;
 
   top_frame = __builtin_frame_address (0);
   top_stack = CURRENT_STACK_FRAME;
 
   /* We skip the call to this function, it makes no sense to record it.  */
-  current = (struct layout *) top_frame;
+  current = BOUNDED_1 ((struct layout *) top_frame);
   while (cnt < size)
     {
       if ((void *) current INNER_THAN top_stack