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-rw-r--r--gdb/frame.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/gdb/frame.h b/gdb/frame.h
index f32021cf0fa..fbe62756abc 100644
--- a/gdb/frame.h
+++ b/gdb/frame.h
@@ -310,7 +310,7 @@ extern struct frame_id frame_id_unwind (struct frame_info *frame);
UNWIND_CACHE is provided as mechanism for implementing a per-frame
local cache. It's initial value being NULL. Memory for that cache
- should be allocated using frame_obstack_alloc().
+ should be allocated using frame_obstack_zalloc().
Register window architectures (eg SPARC) should note that REGNUM
identifies the register for the previous frame. For instance, a
@@ -413,7 +413,7 @@ struct frame_info
/* Anything extra for this structure that may have been defined
in the machine dependent files. */
- /* Allocated by frame_obstack_alloc () which is called /
+ /* Allocated by frame_extra_info_zalloc () which is called /
initialized by INIT_EXTRA_FRAME_INFO */
struct frame_extra_info *extra_info;
@@ -472,7 +472,11 @@ enum print_what
#define SIZEOF_FRAME_SAVED_REGS \
(sizeof (CORE_ADDR) * (NUM_REGS+NUM_PSEUDO_REGS))
-extern void *frame_obstack_alloc (unsigned long size);
+/* Allocate zero initialized memory from the frame cache obstack.
+ Appendices to the frame info (such as the unwind cache) should
+ allocate memory using this method. */
+
+extern void *frame_obstack_zalloc (unsigned long size);
/* If FRAME_CHAIN_VALID returns zero it means that the given frame
is the outermost one and has no caller. */