From: John Wolfe <jwolfe@vmware.com>
Date: Thu, 10 Mar 2022 19:36:24 +0000 (-0800)
Subject: Common header file change not applicable to open-vm-tools.
X-Git-Tag: stable-12.1.0~117
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b47748c330f1fa495f099db0d6fcc300f9e82240;p=thirdparty%2Fopen-vm-tools.git

Common header file change not applicable to open-vm-tools.
---

diff --git a/open-vm-tools/lib/include/vm_basic_defs.h b/open-vm-tools/lib/include/vm_basic_defs.h
index fd6567fd8..936a3517f 100644
--- a/open-vm-tools/lib/include/vm_basic_defs.h
+++ b/open-vm-tools/lib/include/vm_basic_defs.h
@@ -884,6 +884,11 @@ typedef int pid_t;
  * wasted.  On x86, GCC 6.3.0 behaves sub-optimally when variables are declared
  * on the stack using the aligned attribute, so this pattern is preferred.
  * See PRs 1795155, 1819963.
+ *
+ * GCC9 has been shown to exhibit aliasing issues when using
+ * '-fstrict-aliasing=2' that did not happen under GCC6 with this
+ * construct.
+ * See @9503890, PR 2906490.
  */
 #define WITH_PTR_TO_ALIGNED_VAR(_type, _align, _var)                     \
    do {                                                                  \