Hi Eliot,

On Thu, 12 Dec 2019, Eliot Miranda wrote:

> Hi Chris,
>       On Dec 11, 2019, at 8:03 PM, Chris Muller <asqueaker at gmail.com> wrote:
>
>       Is this a fix we should want in the 5.3 release?
> 
> 
> I do t think it affects the release.  This only affects builds that use a particular version of gcc on ARM64. As far as we’re aware, it doesn’t affect x86-64 builds.  But if anyone sees the issue in a current build they
> should say so asap.

This seems to be the same bug described in this thread: 
http://forum.world.st/Primitive-40-asFloat-fails-for-me-tp5095689p5095908.html

Levente

>
>       On Wed, Dec 11, 2019 at 2:09 PM <commits at source.squeak.org> wrote:
>        
>       Eliot Miranda uploaded a new version of VMMaker to project VM Maker:
>       http://source.squeak.org/VMMaker/VMMaker.oscog-eem.2606.mcz
>
>       ==================== Summary ====================
>
>       Name: VMMaker.oscog-eem.2606
>       Author: eem
>       Time: 11 December 2019, 12:08:45.007873 pm
>       UUID: be1eac72-340a-4ed5-bfe7-6051597847a4
>       Ancestors: VMMaker.oscog-eem.2605
>
>       Fix the "funny floats" issue with gcc et al.  Casting the address of an automatic long to an int * is no longer allowed.  Thanks to Pablo Tessone for the analysis and fix.
>
>       =============== Diff against VMMaker.oscog-eem.2605 ===============
>
>       Item was changed:
>         ----- Method: Spur64BitMemoryManager>>fetchLong32:ofFloatObject: (in category 'object access') -----
>         fetchLong32: fieldIndex ofFloatObject: oop
>               "index by word size, and return a pointer as long as the word size"
>
>               | bits |
>               (self isImmediateFloat: oop) ifFalse:
>                       [^self fetchLong32: fieldIndex ofObject: oop].
>               bits := self smallFloatBitsOf: oop.
>       +       ^fieldIndex = 0
>       +               ifTrue: [bits bitAnd: 16rFFFFFFFF]
>       +               ifFalse: [bits >> 32]!
>       -       ^self
>       -               cCode: [(self cCoerceSimple: (self addressOf: bits) to: #'int *') at: fieldIndex]
>       -               inSmalltalk:
>       -                       [self flag: #endian.
>       -                        fieldIndex = 0
>       -                               ifTrue: [bits bitAnd: 16rFFFFFFFF]
>       -                               ifFalse: [bits >> 32]]!
> 
> 
> 
>