The current version of Maxima (00fcc04) bumps into several failures in rtestint when compiled with GCL 2.6.14.
GCL advertises itself as: GCL (GNU Common Lisp) 2.6.14 Fri Jan 13 10:47:56 AM EST 2023 ANSI git: Version_2_6_14 The failures start with Running tests in rtestint: ********************** Problem 56 *************** Input: cos(x) integrate(------, x, minf, inf) 2 x + 1 Result: - 1 2 %e (%e + 1) %pi ------------------- 2 This differed from the expected result: - 1 %e %pi and then there are about a dozen more in a similar vein. There aren't any unexpected failures in any other test scripts. I don't remember seeing failures in rtestint before, although I don't check regularly. I don't know if it's due to a change in Maxima or in GCL. I built the same Maxima version w/ other Lisps (SBCL, Clisp, Clozure CL, ECL) and none of them report errors in rtestint. I haven't taken the time to investigate, can anyone hazard a guess? best Robert