Raymond Toy pushed to branch master at cmucl / cmucl Commits: 0fc0061b by Raymond Toy at 2015-12-27T10:16:45Z Disable FP traps when printing arithmetic-error messages Printing of FP numbers can signal some traps like overflow, underflow, inexact, or denormalized-operand, so we need to disable these traps when printing out the error message for arithmetic errors. - - - - - 1 changed file: - src/code/error.lisp Changes: ===================================== src/code/error.lisp ===================================== --- a/src/code/error.lisp +++ b/src/code/error.lisp @@ -1138,9 +1138,14 @@ (format stream (intl:gettext "Arithmetic error ~S signalled.") (type-of condition)) (when (arithmetic-error-operation condition) - (format stream (intl:gettext "~%Operation was ~S, operands ~S.") - (arithmetic-error-operation condition) - (arithmetic-error-operands condition)))))) + ;; Printing the operands can signal these FP traps, so + ;; disable them while we're printing out the error + ;; message. + (with-float-traps-masked (:overflow :underflow :inexact + #+x86 :denormalized-operand) + (format stream (intl:gettext "~%Operation was ~S, operands ~S.") + (arithmetic-error-operation condition) + (arithmetic-error-operands condition))))))) (define-condition division-by-zero (arithmetic-error) ()) (define-condition floating-point-overflow (arithmetic-error) ()) View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/commit/0fc0061b5302f516f051a59968...