[squeak-dev] Squeak5.3 linux ARMv6 segfaults on startup

Nicolas Cellier nicolas.cellier.aka.nice at gmail.com
Wed Mar 11 07:39:01 UTC 2020

I have simulated the VM (nightly, it's too long),

| cos |
cos := CogVMSimulator newWithOptions: #(Cogit StackToRegisterMappingCogit
ObjectMemory Spur32BitCoMemoryManager
ISA ARMv5 ).
cos desiredNumStackPages: 8.
cos openOn: 'Squeak5.3-19431-32bit.image'.
cos openAsMorph; run

It starts normally thru simulator (I don't attach the screen snapshot, but
it takes more than 2G byteCodes/241k sends to obtain the preference wizard)

Could the crash be related to the cross-compiler?
Is it gcc or clang currently for ARM builds?
On macos, -fsanitize=undefined notices a few unaligned memory access...
Could it be a clue?

Le lun. 9 mars 2020 à 02:17, tim Rowledge <tim at rowledge.org> a écrit :

> > On 2020-03-08, at 12:12 PM, tim Rowledge <tim at rowledge.org> wrote:
> >
> > From the stack etc it looks as if something within
> SmalltalkImage>setGCParameters (so immediately after the return from
> snapshot primitive) calls vsprintf() and has a little conniption. Not clear
> whether the issue is in the vmParameterAt: or the vmParameterAt:put: yet.
> OK, no particular helpful news from looking at the VM generated code; the
> vmParameterAt:put: case would seem to be using the code in
> src/vm/cointerp.c ll: 55603-8 where I see no plausible connection to
> vsprintf(). Sigh.
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
> Don't document the program; program the document.
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