[Pkg-kde-extras] Bug#1042376: digikam crashes with "Illegal instruction"

[Steven Robbins]

On Monday, August 14, 2023 1:25:23 A.M. CDT Detlef Matthiessen wrote:
>    Hi Steve,
> 
>    right after I replied to the bug report, I noticed:
> 
> dm at fluke:/tmp$ diff test-no-sse4 test-sse4
> dm at fluke:/tmp$
> 
>    Can you confirm that the attached binaries are identical?

Nice catch.  They are identical.  I repeated the compilations this morning with/without -
msse4.1 and the result is indeed identical.  In fact, it is the same when I omit *both* -
msse2 and -msse4.1.

I notice also that nowhere does the code reference the matrix computed.  I wondered 
whether all that code was being optimized away -- so I added code to reference it:

std::cout << "Element[0][0] = " << yuv2rgb_bt601(0,0) << "\n";

However, there is no change: the binary is identical regardless of the -m options.  

So I'm back to square 1, very confused by your crash.

-Steve

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