Sorry for the delay in getting back with a response to this. I think it is fairly clear in the Clojure Compiler that there is an exception that will wrap errors that occur during macroexpansion now.
Around here https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/Compiler.java#L6627-L6649, the Compiler.macroexpand1() now has a try-catch for Throwable around the evaluation of the macro invocation. This was not the case in Clojure version 1.6. See around https://github.com/clojure/clojure/blob/clojure-1.6.0/src/jvm/clojure/lang/Compiler.java#L6548-L6560 for a reference point. I'm fairly sure that is what has caused this change in behavior that broke our expectations that the exception types our code through during macroexpansion would propagate all the way back to the caller. Again, I think this was a bad expectation to have, but it is a little tricky. It is a little trickier for us to have any strong assertions on the type of exception that may come from a macro now. Compiler$CompilerException seems too dependent on the implementation. So we've opted to just assert there would be a is-thrown? RuntimeException in these sorts of tests. If we want to test something like an ExceptionInfo's data map, we now just have to write a helper to walk the stack trace until we find it - which would likely be a single "step" up the trace. A simple reproducing case: *clojure-version* ;= {:major 1, :minor 7, :incremental 0, :qualifier "RC1"} (defmacro demo [] (throw (ex-info "fail" {}))) (demo) ;= CompilerException clojure.lang.ExceptionInfo: fail {}, compiling:(form-init4053282905768384039.clj:1:1) vs. *clojure-version* ;= {:major 1, :minor 6, :incremental 0, :qualifier nil} (demo) ;= ExceptionInfo fail clojure.core/ex-info (core.clj:4403) On Saturday, May 23, 2015 at 8:52:47 AM UTC-5, Alex Miller wrote: > > I'm not aware of any wholesale changes with respect to compiler > exceptions. Can you give an example? -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
