[Digikam-devel] [Bug 274940] digikam freezes when using "sharpen: refocus" (cpu 100%)

[Francesco Riosa]

https://bugs.kde.org/show_bug.cgi?id=274940





--- Comment #15 from Francesco Riosa <francesco+kde pnpitalia it>  2011-06-18 15:28:19 ---
Created an attachment (id=61117)
 --> (http://bugs.kde.org/attachment.cgi?id=61117)
emerge --info sci-libs/clapack

(In reply to comment #11)
> # emerge --info: (see also the following attachment)
> ---------------- 8< ----------------
> [...]
> CFLAGS="-O2 -march=core2 -msse4.1 -pipe"
> [...]
> CXXFLAGS="-O2 -march=core2 -msse4.1 -pipe"
> [...]
> ---------------- >8 ----------------
> 
> If debugging, I add "-ggdb" to CFLAGS and CXXFLAGS and add "nostrip" to
> FEATURES. The Problem occurs in "debug-" and "non-debug-mode".
> 
> 
> # cat /proc/cpuinfo
> ---------------- >8 ----------------
> [...]
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 23
> model name      : Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz
> [..]
> 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 nx lm constant_tsc
> arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2
> ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dts tpr_shadow vnmi flexpriority
> [...]
> ---------------- 8< ----------------
> 
> According to this Wiki-Article
> (http://en.gentoo-wiki.com/wiki/Safe_Cflags/Intel#Core_2_Duo.2FQuad.2C_Xeon_51xx.2F53xx.2F54xx.2F3360.2C_Pentium_Dual-Core_T23xx.2B.2FExxxx.2C_Celeron_Dual-Core)
> those use flags should be ok.

Same CPU here, but using a 64bit environment, recompiled sci-libs/clapack with
C*FLAGS="-O2 -march=core2 -msse4.1 -pipe -ggdb", gcc-4.5.2 and the loop is not
reproducible.
Same does apply using gcc-4.6.0 and CFLAGS as in attached emerge --info.

Speaking of digikam-2.0 from git because I've problem recompiling digikam-1.9
alone with gcc-4.5.2 (need to rebuild kexif and possibly other)

may be this problem only related to 32 bit builds?

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