From: Ulrich Drepper <drepper@redhat.com>
Date: Fri, 30 Jan 1998 16:54:27 +0000 (+0000)
Subject: Make sure the variable `reloc' is really kept as a variable.
X-Git-Tag: cvs/before-sparc-2_0_x-branch~268
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=acdcd9290fbe8826720bf7c4342dad092dc04e09;p=thirdparty%2Fglibc.git

Make sure the variable `reloc' is really kept as a variable.
---

diff --git a/elf/dl-open.c b/elf/dl-open.c
index fe9f8ff017c..86b9c226736 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -1,5 +1,5 @@
 /* Load a shared object at runtime, relocate it, and run its initializer.
-   Copyright (C) 1996 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -73,6 +73,13 @@ _dl_open (const char *file, int mode)
 	     between when _dl_object_relocation_scope returns and when we
 	     enter the dynamic linker's code (_dl_relocate_object).  */
 	  __typeof (_dl_relocate_object) *reloc = &_dl_relocate_object;
+
+	  /* GCC is very clever.  If we wouldn't add some magic it would
+	     simply optimize away our nice little variable `reloc' and we
+	     would result in a not working binary.  So let's swing the
+	     magic ward.  */
+	  asm ("" : "=r" (reloc) : "0" (reloc));
+
 	  (*reloc) (l, _dl_object_relocation_scope (l),
 		    (mode & RTLD_BINDING_MASK) == RTLD_LAZY);
 	  *_dl_global_scope_end = NULL;