Gcc attribute may_alias is not supported (or silently ignored) by all supported compilers.
Originally committed as revision 21917 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -56,7 +56,7 @@
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#endif
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#ifndef av_alias
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#if HAVE_ATTRIBUTE_MAY_ALIAS
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#if HAVE_ATTRIBUTE_MAY_ALIAS && (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(3,3)
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# define av_alias __attribute__((may_alias))
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#else
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# define av_alias
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