[MacPorts] #31717: postgresql91 segfaults on OS X 10.7 when built with clang

[MacPorts]

#31717: postgresql91 segfaults on OS X 10.7 when built with clang
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 Reporter:  francis@…          |       Owner:  mww@…           
     Type:  defect             |      Status:  new             
 Priority:  Normal             |   Milestone:                  
Component:  ports              |     Version:  2.0.3           
 Keywords:  haspatch           |        Port:  postgresql91    
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Comment(by Kona8lend@…):

 Definitely a clang bug up to and including Xcode 4.2.1. Manifests as
 segfault in postgresql-9.1.1/src/bin/psql/common.c:579. Basically clang
 -O2 erroneously replaces the memcpy() with movaps instructions which
 require 16-byte alignment even when data is not aligned.

 Fixed is in opensource llvm/clang trunk r140902. Not sure when it will
 roll to Xcode.

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Ticket URL: <https://trac.macports.org/ticket/31717#comment:20>
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