Another integration issue from the ODE testsuite.
With 5.9.3 (and before) I have
(%i1) display2d:false;
(%o1) false
(%i2) integrand:sin(x)*%e^(log(sin(x)^2-1)/2)/cos(x);
(%o2) sin(x)*%e^(log(sin(x)^2-1)/2)/cos(x)
(%i3) integral:integrate(integrand,x);
(%o3) -sqrt(sin(x)^2-1)
(%i4) diff(integral,x)-integrand;
(%o4) -sin(x)*%e^(log(sin(x)^2-1)/2)/cos(x)-cos(x)*sin(x)/sqrt(sin(x)^2-1)
(%i5) radcan(%);
(%o5) -(sin(x)^3+(cos(x)^2-1)*sin(x))/(cos(x)*sqrt(sin(x)-1)*sqrt(sin(x)+1))
(%i6) trigsimp(%);
(%o6) 0
With recent CVS maxima the integral has changed sign.
(%i1) display2d:false;
(%o1) false
(%i2) integrand:sin(x)*%e^(log(sin(x)^2-1)/2)/cos(x);
(%o2) sin(x)*%e^(log(sin(x)^2-1)/2)/cos(x)
(%i3) integral:integrate(integrand,x);
(%o3) sqrt(sin(x)^2-1)
(%i4) diff(integral,x)-integrand;
(%o4) cos(x)*sin(x)/sqrt(sin(x)^2-1)-sin(x)*%e^(log(sin(x)^2-1)/2)/cos(x)
(%i5) radcan(%);
(%o5) -(sin(x)^3+(-cos(x)^2-1)*sin(x))/(cos(x)*sqrt(sin(x)-1)*sqrt(sin(x)+1))
(%i6) trigsimp(%);
(%o6) 2*cos(x)*sin(x)/(sqrt(sin(x)-1)*sqrt(sin(x)+1))
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