From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 19 Jun 2011 12:33:27 +0000 (-0400)
Subject: x86_64: ensure that dtor pointer passed to app is 0 so it won't be used
X-Git-Tag: v0.7.11~39
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=779165e6d42cfb3d19859e4eaa0da6807b24ad20;p=oweals%2Fmusl.git

x86_64: ensure that dtor pointer passed to app is 0 so it won't be used

leaving it uninitialized caused unpredictable crashes or worse due to
calling an indeterminate function pointer.
---

diff --git a/src/ldso/x86_64/start.s b/src/ldso/x86_64/start.s
index efb27454..cb0a9e1f 100644
--- a/src/ldso/x86_64/start.s
+++ b/src/ldso/x86_64/start.s
@@ -5,4 +5,5 @@ _start:
 	lea 8(%rsp),%rsi
 	lea _GLOBAL_OFFSET_TABLE_(%rip),%rdx
 	call __dynlink
+	xor %edx,%edx
 	jmp *%rax