Re: [Vala] Seg Fault when using printf function

[Steven Oliver]

I apologize for the delay, but the bug has been submitted.

https://bugzilla.gnome.org/show_bug.cgi?id=791973
Steven N. Oliver


On Mon, Dec 11, 2017 at 7:13 AM, Daniel Espinosa  wrote:
> Could you file a bug report in bugzilla in order to trace it up to fix it?
>
> El 27/11/2017 1:25 a.m., "Steven Oliver"  escribió:
>>
>> Hello,
>> I recently upgraded my OS to Ubuntu 17.10 from 16.04 and I think I've
>> discovered a bug in Vala.
>>
>> This commit is now causing my application to crash:
>>
>> https://github.com/steveno/balistica/commit/061a28e98f3c4468b4465e580ada78f11eec4461?diff=unified
>>
>> I don't understand what changed in that commit that breaks the
>> application with my version of Vala versus the one I had on 16.04, but
>> I managed to trace it down to two lines (511 & 513) in
>> src/balistica_application.vala (which aren't changed in the diff !!).
>> If you comment out those two lines it will compile and produce the
>> drag calculation as expected.
>>
>> I also figured out that if you change those two lines so that the
>> printf functions don't format more than two entries, it will also
>> compile and produce the expected output. With a third entry, though,
>> it seg faults trying to print the calculation results.
>>
>> Will Seg Fault:
>> txtViewDragResults.buffer.text += ("Initial Velocity: %.2f ft/s Zero
>> Range: %.2f yards Shooting Angle: %.2f degrees\n").printf (lsln.getMv
>> (), lsln.getZerorange (), lsln.getAngle ()) ;
>>
>> Will print as expected:
>> txtViewDragResults.buffer.text += ("Initial Velocity: %.2f ft/s Zero
>> Range: %.2f yards\n").printf (lsln.getMv (), lsln.getZerorange ()) ;
>>
>> I have attached the C code that is generated.
>>
>> Hopefully that wasn't to confusing. Anyone have any thoughts? Suggestions?
>>
>> Steven N. Oliver
>>
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>
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[Vala] Gnome Gitlab

[Steven Oliver]

Will Vala be moving to Gitlab? I think it would make contributing to
the project a lot easier!

Steven N. Oliver
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