From: Alan Modra <amodra@gmail.com>
To: binutils@sourceware.org
Subject: Re: stack overflow in debug_write_type
Date: Wed, 10 May 2023 23:11:20 +0930 [thread overview]
Message-ID: <ZFufADl7yQOGfRpN@squeak.grove.modra.org> (raw)
Apparently u.kindirect->slot can point at a NULL.
* debug.c (debug_write_type): Don't segfault on NULL indirect.
diff --git a/binutils/debug.c b/binutils/debug.c
index 5cc77f74906..bb26d9143d0 100644
--- a/binutils/debug.c
+++ b/binutils/debug.c
@@ -2490,7 +2490,8 @@ debug_write_type (struct debug_handle *info,
return false;
case DEBUG_KIND_INDIRECT:
/* Prevent infinite recursion. */
- if ((*type->u.kindirect->slot)->mark == info->mark)
+ if (*type->u.kindirect->slot != DEBUG_TYPE_NULL
+ && (*type->u.kindirect->slot)->mark == info->mark)
return (*fns->empty_type) (fhandle);
return debug_write_type (info, fns, fhandle, *type->u.kindirect->slot,
name);
--
Alan Modra
Australia Development Lab, IBM
next reply other threads:[~2023-05-10 13:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-10 13:41 Alan Modra [this message]
-- strict thread matches above, loose matches on Subject: below --
2023-05-09 7:48 Alan Modra
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