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authorLudovic Courtès <ludo@gnu.org>2018-05-16 10:05:24 +0200
committerLudovic Courtès <ludo@gnu.org>2018-05-23 10:21:02 +0200
commit7874bbbb9f09cc14ea3e179fd0fa10da5f90cfc7 (patch)
tree858882215ed759814f841b714250434e975f604f /tests/records.scm
parent56f9d442e0b5624130042f69f33ea5bd7e970798 (diff)
downloadpatches-7874bbbb9f09cc14ea3e179fd0fa10da5f90cfc7.tar
patches-7874bbbb9f09cc14ea3e179fd0fa10da5f90cfc7.tar.gz
records: Insert record type ABI checks in constructors.
* guix/records.scm (print-record-abi-mismatch-error): New procedure. <top level>: Add 'set-exception-printer!' call. (current-abi-identifier, abi-check): New procedures. (make-syntactic-constructor): Add #:abi-cookie parameter. Insert calls to 'abi-check'. (define-record-type*)[compute-abi-cookie]: New procedure. Use it and emit a definition of the 'current-abi-identifier' for TYPE. * tests/records.scm ("ABI checks"): New test.
Diffstat (limited to 'tests/records.scm')
-rw-r--r--tests/records.scm30
1 files changed, 29 insertions, 1 deletions
diff --git a/tests/records.scm b/tests/records.scm
index d6d27bb96a..80e08a9a5f 100644
--- a/tests/records.scm
+++ b/tests/records.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2018 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -288,6 +288,34 @@
(and (string-match "extra.*initializer.*baz" message)
(eq? proc 'foo)))))
+(test-assert "ABI checks"
+ (let ((module (test-module)))
+ (eval '(begin
+ (define-record-type* <foo> foo make-foo
+ foo?
+ (bar foo-bar (default 42)))
+
+ (define (make-me-a-record) (foo)))
+ module)
+ (unless (eval '(foo? (make-me-a-record)) module)
+ (error "what?" (eval '(make-me-a-record) module)))
+
+ ;; Redefine <foo> with an additional field.
+ (eval '(define-record-type* <foo> foo make-foo
+ foo?
+ (baz foo-baz)
+ (bar foo-bar (default 42)))
+ module)
+
+ ;; Now 'make-me-a-record' is out of sync because it does an
+ ;; 'allocate-struct' that corresponds to the previous definition of <foo>.
+ (catch 'record-abi-mismatch-error
+ (lambda ()
+ (eval '(foo? (make-me-a-record)) module)
+ #f)
+ (lambda (key rtd . _)
+ (eq? rtd (eval '<foo> module))))))
+
(test-equal "recutils->alist"
'((("Name" . "foo")
("Version" . "0.1")