[Pkg-phototools-devel] Bug#815712: ilmbase: FPU functions unimplemented on kfreebsd/hurd

[Steven Chamberlain]

(let's continue this as Bug#815712 instead)

Steven Chamberlain wrote:
> [...] I'm not sure how that could have regressed since
> the -8 package...  I wonder if it has to do with the patch that was
> only meant to disable the FPU features on hurd and kfreebsd.

I'm fairly sure Samuel's patch didn't cause that regression on Linux,
but someone who has a linux-i386 build environment could perhaps try
building -9 without it;  or even better, try a fresh build of -8 to see
if the regression is rather in some build dependency.

Possibly it is just due to the newer gcc-5 package used, maybe doing
floating point operations in a different order and getting a slightly
different result?

| $ LD_LIBRARY_PATH=./Imath/.libs/:./Iex/.libs/:./Half/.libs/ gdb ImathTest/.libs/ImathTest
| (gdb) run
| [...]
| Program received signal SIGABRT, Aborted.
| 0x28433fc7 in __syscall_thr_kill () from /lib/i386-kfreebsd-gnu/i686/cmov/libc.so.0.1
| 
| ImathTest: testBoxAlgo.cpp:892: void {anonymous}::boxMatrixTransform(): Assertion `b21 == b2' failed.
| (gdb) bt full
| [...]
| #5  0x0806e879 in (anonymous namespace)::boxMatrixTransform () at testBoxAlgo.cpp:892
|         b21 = {min = {x = 11.6798019, y = 8.62185574, z = -24.5730953}, max = {x = 16.5198555, y = 12.7859335, z = -20.120142}}
|         b2 = {min = {x = 11.6798019, y = 8.62185574, z = -24.5730953}, max = {x = 16.5198536, y = 12.7859335, z = -20.120142}}
| #6  0x08070dae in testBoxAlgo () at testBoxAlgo.cpp:1023

max.x only differs by 0.0000019

The attached patch fixes it, although I've found another testsuite
failure after this.

Regards,
-- 
Steven Chamberlain
steven at pyro.eu.org
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