failure 28:

Requirement failed: {gammal.lgamma.11} If x is a non-positive integer, either HUGE_VAL or NaN is returned

location
trace	/var/opt/lsb/test/olver-core/2014-01-29_05-08-38/math_gamma_scenario.utz (math_gamma_scenario.utt), line 2159
occurence
scenario	math_gamma_scenario
specification function	gamma_spec()
parameter value	CallContext context = [pid=4264,thr=b7532700]
parameter value	Unifloat * @x = (long double) -5.0000000000000000000000000000000000e-01 (-0x.8000000000000000P0L)
parameter value	Unifloat * x = (long double) -5.0000000000000000000000000000000000e-01 (-0x.8000000000000000P0L)
parameter value	IntT * @signgam = <0xbfb524f4>ptr to 1
parameter value	IntT * signgam = <0xbfb524f4>ptr to -1
parameter value	ErrorCode * @errno = EOK
parameter value	ErrorCode * errno = EOK
return value	(Unifloat *) (long double) 1.2655121234846453965715989964380128e+00 (0x.A1FC4D1F876EB106P1L)
coverage & branch	C X IS NORMAL NON POSITIVE
properties
REQ failed	gammal.lgamma.11
expected value	(long double) Infinity
kind	POSTCONDITION_FAILED

similar known bug(s)
According to LSB, gamma(x) family of functions shall return either HUGE_VAL or NaN if x is a non-positive integer. But on the target machine the functions don't return HUGE_VAL or NaN if the argument is not positive.