My reading of the bug given as a reason for not testing that FE_INVALID is raised for (both quiet and signaling) NaN arguments is that it's specifically about constant arguments. That is, it ought to be possible to have a testcase that verifies FE_INVALID is raised when appropriate (and not when inappropriate) provided the arguments come from volatile variables rather than directly from constants. (There would still need to be a powerpc*-*-* XFAIL referencing bug 58684.) Only a test for constant arguments would need to wait on a fix for bug 106805.
-- Joseph S. Myers jos...@codesourcery.com
