RFR JDK-8022407 sun/misc/CopyMemory.java fails with SIGSEGV in Unsafe_SetByte+0x35

Lois Foltan lois.foltan at oracle.com
Tue Aug 27 16:18:21 UTC 2013

Please review the following fix:
     open webrev at http://cr.openjdk.java.net/~hseigel/bug_jdk8022407/

     bug link at https://bugs.openjdk.java.net/browse/JDK-8022407

Summary of fix:

The JDK 8 build on MacOS, when built with the Xcode 4.6.2 clang++ 
compiler, exhibited a compiler optimization issue when prims/unsafe.cpp 
was compiled at the default -Os level. As a work around fix, knock the 
optimization level down down to -O0.

     MacOS: built fastdebug & product images using clang++ (ran JTREG & 
                    built using llvm-g++ to verify prims/unsafe.cpp 
remained compiled at -Os

Thank you,

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