[fpc-devel] Odd test failure on x86_64-win64

[J. Gareth Moreton]

It just seemed odd to me that switching to the external assembler (due 
to -a) causes the section to be read/write, while the internal assembler 
can handle it.  That might be a limitation with the external assembler 
though.

Gareth aka. Kit

On 12/05/2021 22:22, Pierre Muller via fpc-devel wrote:
>
>
> Please look at:
>
>
> https://www.freepascal.org/testsuite/cgi-bin/new-testsuite2.cgi?action=4&testfileid=5630 
>
>
> .rdata support, i.e. read-only data sections,
> is not supported in several CPU-OS combination,
> and  IIRC, it is even worse for PIC code,
> but I don't really know if these special limitations
> should not be removed...
>
> See TGNUAssembler.sectionname method in compiler/aggas.pas unit,
> and difference between secnames and secnames_pic inside that method.
>
> Pierre
>
> Le 12/05/2021 à 20:13, J. Gareth Moreton via fpc-devel a écrit :
>> Hi everyone,
>>
>> So I stumbled across this during my optimisation development:
>>
>> Under x86_64-win64 (I'm not sure about other platforms), the test
>> "test/tarray15.pp" fails with exitcode 19 if you run the test suite with
>> TEST_OPT=-a to create assembly dumps.  The failure is because the code
>> attempts to write to a constant but doesn't raise an exception while
>> doing so.  Can anyone else confirm this?
>>
>> Gareth aka. Kit
>>
>>
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