Comment 1 for bug 672782

The testcase fails on amd64 (built with pbuilder):

/usr/bin/make check-TESTS
make[3]: Entering directory `/tmp/buildd/pixman-0.20.0/build/test'
PASS: a1-trap-test
PASS: region-test
PASS: region-translate-test
PASS: fetch-test
PASS: oob-test
PASS: window-test
PASS: gradient-crash-test
PASS: trap-crasher
PASS: alpha-loop
PASS: scaling-crash-test
PASS: alphamap
blitters test failed! (checksum=4B2D7EA5, expected 1DB8BDF8)
FAIL: blitters-test
scaling test passed (checksum=7F1AB59F)
PASS: scaling-test
affine test passed (checksum=46EC3C6A)
PASS: affine-test
CONJOINT_OVER CA composite test error of 15.0000 --
           R G B A
got: 1.00 0.00 0.00 1.00 [0000801f]
expected: 0.52 0.00 0.00 1.00
src color: 1.00 1.00 1.00 0.00
msk color: 0.50 0.00 0.00 0.50
dst color: 0.00 0.00 0.00 1.00
src: a1b1g1r1 10x10, mask: b5g6r5 1x1, dst: a1b5g5r5 1x1

Test 18 failed.
FAIL: composite
=============================================
2 of 15 tests failed
Please report to <email address hidden>
=============================================
make[3]: *** [check-TESTS] Error 1
make[3]: Leaving directory `/tmp/buildd/pixman-0.20.0/build/test'

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