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

Fri Sep 28 10:47:14 CEST 2012

'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
+
+-- 
+
+Colin Guthrie
+colin(at)mageia.org
+http://colin.guthr.ie/
+
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+