Fix #79472: ext/ffi/tests/040.phpt TC fails on Big endian arch

[cmb69]

For now we are choosing the simplest solution, namely to skip the test
on big-endian architectures.

[carusogabriel]

What if instead, we add an XFAIL section?

[cmb69]

We could dynamically mark the test as xfail for big-endian architectures (i.e. s/skip/xfail), but skipping seems to be more inline with what we usually do for 32/64bit only tests. Might be better, if we make the test to succeed on little-endian as well as big-endian, or maybe to split the test.

[nikic]

By the way, I think we should add a constant like PHP_BIG_ENDIAN to make such checks simpler.

[vibhutisawant]

@cmb69
These testcases fail on Big endian arch as they appear to be Little endian arch specific

• ext/exif/tests/float_cast_overflow.phpt
• ext/exif/tests/bug79046.phpt

Below mentioned bugs were raised for the same
79279 and 79336

Can they also be skipped?

[nikic]

@vibhutisawant Those failures indicate an implementation bug, which needs to be fixed.

[dstogov]

Merged as 8c5faf7