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8220283: ZGC fails to build on GCC 4.4.7: ATTRIBUTE_ALIGNED compatibility issue

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Reviewed-by: shade, kbarrett
This commit is contained in:
Severin Gehwolf 2019-03-07 16:15:43 +01:00
parent 5250aaafdb
commit cafb914cca
1 changed files with 4 additions and 1 deletions
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5
src/hotspot/share/utilities/globalDefinitions_gcc.hpp
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@ -269,6 +269,9 @@ inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55382 and // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55382 and
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53017 // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53017
// //
#define ATTRIBUTE_ALIGNED(x) __attribute__((aligned(x+0))) // GCC versions older than 4.6.4 would fail even with "+0", and needs additional
// cast to typeof(x) to work around the similar bug.
//
#define ATTRIBUTE_ALIGNED(x) __attribute__((aligned((typeof(x))x+0)))
#endif // SHARE_UTILITIES_GLOBALDEFINITIONS_GCC_HPP #endif // SHARE_UTILITIES_GLOBALDEFINITIONS_GCC_HPP