Bug#909861: shark FTBFS on i386 with gcc 8

[Adrian Bunk]

Source: shark
Version: 3.1.4+ds1-1
Severity: serious
Tags: ftbfs

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/i386/shark.html

...
 57/160 Test  #67: Trainers_MissingFeatureSvmTrainer ............***Failed    0.52 sec
Running 2 test cases...
./Test/Algorithms/Trainers/MissingFeatureSvmTrainerTests.cpp(165): error: in "Algorithms_Trainers_MissingFeatureSvmTrainerTests/MissingFeatures": check test::verifyVectors(output1, output2) has failed. index:0, seen:1.23556e+267, expected:-5.83284e+118

*** 1 failure is detected in the test module "MissingFeaturesSvmTrainerTestModule"
...
99% tests passed, 1 tests failed out of 160

Total Test time (real) = 697.78 sec

The following tests FAILED:
	 67 - Trainers_MissingFeatureSvmTrainer (Failed)
Errors while running CTest
make[2]: *** [Makefile:143: test] Error 8