On 2020-08-30 00:23, ASSI wrote: > Ken Brown via Cygwin writes: >> OK, so the problem was introduced between 3.1.4 and 3.1.5. It should >> be pretty easy to bisect and find the culprit. I'll do that tomorrow >> if no one beats me to it. > > The most likely culprit would be this I think: > > https://sourceware.org/git/?p=newlib-cygwin.git;a=commitdiff;h=4ad9ba42fc3dd116bad8b9cb89d434256d3431fb > > If so and depending on why exactly it fails, there might be more fallout > from other similar changes.
OP debugged to display winsup/cygwin/math/modfl.c assembler that hasn't changed since added, so compiler, build, or runtime environment updates may have changed the code generated or used e.g. predefined symbols, build flags, runtime CPU features. Does Cygwin detect and allow GCC builtins to be used where available, keeping the function available for fallback where the compiler can't use the builtin? -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. [Data in IEC units and prefixes, physical quantities in SI.] -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
