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[RFA] mips find_proc_desc()
- From: "Martin M. Hunt" <hunt at redhat dot com>
- To: gdb-patches at sources dot redhat dot com
- Date: Thu, 26 Sep 2002 15:01:54 -0700
- Subject: [RFA] mips find_proc_desc()
- Organization: Red Hat Inc
In mips-tdep.c, we have
static mips_extra_func_info_t
find_proc_desc (CORE_ADDR pc, struct frame_info *next_frame, int cur_frame)
{
mips_extra_func_info_t proc_desc;
CORE_ADDR startaddr;
proc_desc = non_heuristic_proc_desc (pc, &startaddr);
if (proc_desc)
{
[...]
}
else
{
[...]
if (startaddr == 0)
startaddr = heuristic_proc_start (pc);
}
}
and we have
static mips_extra_func_info_t
non_heuristic_proc_desc (CORE_ADDR pc, CORE_ADDR *addrptr)
{
CORE_ADDR startaddr;
mips_extra_func_info_t proc_desc;
struct block *b = block_for_pc (pc);
struct symbol *sym;
struct obj_section *sec;
struct mips_objfile_private *priv;
if (PC_IN_CALL_DUMMY (pc, 0, 0))
return NULL;
[...]
}
Looking at "startaddr" in find_proc_desc(), it is passed into
non_heuristic_proc_desc uninitialized and never initialized if
PC_IN_CALL_DUMMY(). Nevertheless find_proc_desc attempts to use it anyway.
There are several simple fixes. The easiest is to initialize it to 0 as it
appears that is what find_proc_desc() expects.
--
Martin Hunt
GDB Engineer
Red Hat, Inc.
2002-09-26 Martin M. Hunt <hunt@redhat.com>
* mips-tdep.c (find_proc_desc): Initialize startaddr.
Index: mips-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/mips-tdep.c,v
retrieving revision 1.126
diff -u -u -r1.126 mips-tdep.c
--- mips-tdep.c 18 Sep 2002 15:37:18 -0000 1.126
+++ mips-tdep.c 26 Sep 2002 22:01:54 -0000
@@ -2336,7 +2336,7 @@
find_proc_desc (CORE_ADDR pc, struct frame_info *next_frame, int cur_frame)
{
mips_extra_func_info_t proc_desc;
- CORE_ADDR startaddr;
+ CORE_ADDR startaddr = 0;
proc_desc = non_heuristic_proc_desc (pc, &startaddr);