[Mageia-dev] Anyone else seeing Qt4+QtScript segv's (e.g. in kate + __memcpy_ssse3)

[Colin Guthrie]

'Twas brillig, and Colin Guthrie at 21/09/12 10:42 did gyre and gimble:
> 'Twas brillig, and Thierry Vignaud at 21/09/12 09:28 did gyre and gimble:
>> On 21 September 2012 10:13, Colin Guthrie <mageia at colin.guthr.ie> wrote:
>>> Hi,
>>>
>>> Since the latest Qt4, I've seen kate crash with segv's.
>>>
>>> Downgrading to the older package fixed the problem.
>>
>> Do you have sse3 support in your CPU (not all x86_64 do)?
> 
> Yup, it's there:
> 
> flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
> pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
> constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64
> monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm tpr_shadow
> 
> Col

OK, so even after all updates, this is still happening for me.

It seems related to this bug:
https://bugs.kde.org/show_bug.cgi?id=305718

which in turn identifies this problem commit which (although from 2010
was only included upstream in Qt 4.8.3

http://qt.gitorious.org/qt/qt/commit/ada98493bbfbd9af0d0b593017e29d39bcd3495e?format=patch

The debian bug also mentions pthread related crashes which I think I've
seen floating around in discussions here.

I'll revert the patch in our Qt.

Col

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Colin Guthrie
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http://colin.guthr.ie/

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