From: nobu@...
Date: 2015-12-09T20:15:03+00:00
Subject: [ruby-core:72005] [Ruby trunk - Misc #11795] [Closed] [PATCH] get rid of breaking strict alias for XL compiler

Issue #11795 has been updated by Nobuyoshi Nakada.

Description updated
Status changed from Open to Closed

gcc/clang optimize away that `memcpy`, at least.

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Misc #11795: [PATCH] get rid of breaking strict alias for XL compiler
https://bugs.ruby-lang.org/issues/11795#change-55415

* Author: Zarko  Todorovski
* Status: Closed
* Priority: Normal
* Assignee: 
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Related to bug 11790. Thank you for adding the changeset. 

It may be better to add a IBM XL specific instruction for this:
in line 70 of regparse.h

~~~c
#ifdef __ibmxl__
 #define SET_NTYPE(node, ntype)  {int value = ntype; memcpy(&((node)->u.base.type), &value, sizeof((node)->u.base.type));}
 #else
 #define SET_NTYPE(node, ntype)   (node)->u.base.type = (ntype)
 #endif
~~~

Not sure whether it affects other compilers and it might be safer to only do this with the XL compiler. 



---Files--------------------------------
ruby_ibmxl.patch (802 Bytes)


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