Merge r1470183 from trunk:

Add workaround for gcc bug on sparc/64bit

PR: 52900

Submitted by: sf
Reviewed by: sf, covener, rpluem



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1476144 13f79535-47bb-0310-9956-ffa450edef68