Test failure on i686

[mbakke]

Hello,

Running the OpenEXR 2.4.0 test suite on 32-bit x86 Linux yields this failure:

=======
Running testLargeDataWindowOffsets
Testing dataWindows with large offsets ... 
dataWindow: (28701996 205844709) (28702591 205845061) 
dataWindow: (-485824597 504726626) (-485824166 504727112)  OK 
dataWindow: (-150831402 288082664) (-150830931 288083109) 
dataWindow: (122833846 -93407155) (122835173 -93406997) 
dataWindow: (-53467928 -490674469) (-53467515 -490673962) 
dataWindow: (-358470157 426600481) (-358465598 426600527) 

error reading back channel B pixel -358469942,426600481 got -nan expected -nan

[peterhillman]

Would it be possible to re-test this against master? The newly merged fix for #571 may also address this issue if 32-bit x86 processors also fail to read non-aligned floats correctly.

[mbakke]

This still fails on commit 0b26a9d:

https://ci.guix.gnu.org/log/wyk3kw7wdh6crpbhamqyx51ynxjdd9fk-openexr-v2.1.0-535-g0b26a9d

[peterhillman]

@mbakke, could you possibly retest against the latest master to see if fce8c17 has fixed the issue? I don't have easy access to 32 bit x86 linux to test or debug the issue

[mbakke]

@peterhillman I can confirm that this test no longer fails on 32-bit x86 (on commit 6546ff2). 🎉

[peterhillman]

Great! I'll call that fixed and close the ticket