Bug#881453: primesieve FTBFS on i386: test failures

[Adrian Bunk]

Source: primesieve
Version: 6.2+ds-1
Severity: serious
Tags: patch

https://buildd.debian.org/status/fetch.php?pkg=primesieve&arch=i386&ver=6.2%2Bds-1&stamp=1510442732&raw=0

...
   dh_auto_test -a -O--builddirectory=_build
	cd _build && make -j4 test ARGS\+=-j4
make[1]: Entering directory '/<<BUILDDIR>>/primesieve-6.2+ds/_build'
Running tests...
/usr/bin/ctest --force-new-ctest-process -j4
Test project /<<BUILDDIR>>/primesieve-6.2+ds/_build
      Start  1: atomic
      Start  2: count_primes1
      Start  3: count_primes2
      Start  4: count_primes3
 1/24 Test  #1: atomic ...........................   Passed    0.28 sec
 2/24 Test  #2: count_primes1 ....................   Passed    0.30 sec
      Start  5: count_quadruplets
      Start  6: count_quintuplets
 3/24 Test  #5: count_quadruplets ................   Passed    0.90 sec
 4/24 Test  #6: count_quintuplets ................   Passed    1.08 sec
      Start  7: count_sextuplets
      Start  8: count_triplets
 5/24 Test  #8: count_triplets ...................   Passed    0.89 sec
 6/24 Test  #7: count_sextuplets .................   Passed    1.11 sec
      Start  9: count_twins
      Start 10: cpu_info
 7/24 Test #10: cpu_info .........................   Passed    0.31 sec
      Start 11: floorPow2
 8/24 Test #11: floorPow2 ........................***Failed    0.21 sec
floorPow2(1) = 1   OK
floorPow2(2) = 2   OK
floorPow2(3) = 2   OK
floorPow2(4) = 4   OK
floorPow2(5) = 4   OK
floorPow2(6) = 4   OK
floorPow2(7) = 4   OK
floorPow2(8) = 8   ERROR

      Start 12: generate_n_primes1
 9/24 Test  #9: count_twins ......................   Passed    0.94 sec
      Start 13: generate_primes1
10/24 Test #13: generate_primes1 .................   Passed    0.30 sec
      Start 14: ilog2
11/24 Test #14: ilog2 ............................***Failed    0.30 sec
ilog2(1) = 0   OK
ilog2(2) = 1   OK
ilog2(3) = 1   OK
ilog2(4) = 2   OK
ilog2(5) = 2   OK
ilog2(6) = 2   OK
ilog2(7) = 2   OK
ilog2(8) = 3   ERROR

      Start 15: isqrt
12/24 Test #15: isqrt ............................   Passed    0.89 sec
      Start 16: next_prime1
13/24 Test #16: next_prime1 ......................   Passed    3.21 sec
      Start 17: nth_prime1
14/24 Test #17: nth_prime1 .......................   Passed    3.52 sec
      Start 18: nth_prime2
15/24 Test #12: generate_n_primes1 ...............   Passed   15.50 sec
      Start 19: nth_prime3
16/24 Test  #3: count_primes2 ....................   Passed   22.85 sec
      Start 20: prev_prime1
17/24 Test #18: nth_prime2 .......................   Passed   16.06 sec
      Start 21: generate_n_primes2
18/24 Test #21: generate_n_primes2 ...............   Passed    0.61 sec
      Start 22: generate_primes2
19/24 Test  #4: count_primes3 ....................   Passed   29.38 sec
      Start 23: next_prime2
20/24 Test #19: nth_prime3 .......................   Passed   23.31 sec
      Start 24: prev_prime2
21/24 Test #20: prev_prime1 ......................   Passed   22.00 sec
22/24 Test #24: prev_prime2 ......................   Passed    3.24 sec
23/24 Test #22: generate_primes2 .................   Passed   19.13 sec
24/24 Test #23: next_prime2 ......................   Passed   21.86 sec

92% tests passed, 2 tests failed out of 24

Total Test time (real) =  51.51 sec

The following tests FAILED:
	 11 - floorPow2 (Failed)
	 14 - ilog2 (Failed)
Errors while running CTest
Makefile:121: recipe for target 'test' failed
make[1]: *** [test] Error 8


This can be fixed with:

--- debian/rules.old	2017-11-12 00:16:05.000000000 +0000
+++ debian/rules	2017-11-12 00:17:52.000000000 +0000
@@ -17,6 +17,11 @@
 	CXXFLAGS := $(subst -O2,-O3,$(CXXFLAGS))
 endif
 
+ifeq ($(DEB_HOST_ARCH),i386)
+        CFLAGS   += -ffloat-store
+        CXXFLAGS += -ffloat-store
+endif
+
 default:
 	@uscan --no-conf --dehs --report || true