Ruby Issue Tracking System

08/08/2016

01:46 AM Ruby Bug #12657: [PATCH] ANSI aliasing fix for XL compiler

Shyouhei Urabe wrote:
> Thank you. I think we don't need the #else part because the memset/memcpy should just work for all ANSI-compliant compilers. Is it OK for me to merge your patch like that way?
Yes, that should work. Zarko (Zarko Todorovski)

08/05/2016

04:41 PM Ruby Bug #12657 (Closed): [PATCH] ANSI aliasing fix for XL compiler

This is related to Bug #12191.
Changing in internal.h:983-985
from :
```diff
-#define RBASIC_CLEAR_CLASS(obj) (((struct RBasicRaw *)((VALUE)(obj)))->klass = 0)
-#define RBASIC_SET_CLASS_RAW(obj, cls) (((struct RBasicRaw... Zarko (Zarko Todorovski)

04/07/2016

01:12 PM Ruby Bug #12191: Violation of ANSI aliasing rules causing problems while compiling

Thanks for making the changed but we've tried getting it to work and it doesn't seem to. It doesn't look like setting these two structs in a union has any impact on aliasing between ("(RBasicRaw).klass") and {"(RBasic).klass"} in this c... Zarko (Zarko Todorovski)

03/17/2016

02:46 PM Ruby Bug #12191 (Closed): Violation of ANSI aliasing rules causing problems while compiling

Hi, I work with IBM's XL compiler and we're noticing that there we're getting compile time failures due to ANSI aliasing rule violations.
For example, in https://github.com/ruby/ruby/blob/trunk/sprintf.c This function:
~~~C
rb_... Zarko (Zarko Todorovski)

12/09/2015

02:35 PM Ruby Misc #11795: [PATCH] get rid of breaking strict alias for XL compiler

Please cancel this, I see I already submitted the changes in bug 11790. Sorry about that. Zarko (Zarko Todorovski)

02:29 PM Ruby Misc #11795 (Closed): [PATCH] get rid of breaking strict alias for XL compiler

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; memcp... Zarko (Zarko Todorovski)

12/08/2015

04:32 PM Ruby Bug #11790 (Closed): [PATCH] ANSI alias rules fix

line 70 in file regparse.h:
~~~c
#define SET_NTYPE(node, ntype) (node)->u.base.type = (ntype)
~~~
needs to be changed to conform with ANSI alias rules
Line 70 as it is can lead to errors in compiling in regparse.c
~~~c
... Zarko (Zarko Todorovski)