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* gnu/packages/patches/sbcl-png-fix-sbcl-compatibility.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/lisp-xyz.scm (sbcl-png)[source]: Use it.
60 lines
2.8 KiB
Diff
60 lines
2.8 KiB
Diff
From 60bbad167b0691995a659121acda55392e4021b6 Mon Sep 17 00:00:00 2001
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From: Andrew Berkley <ajb@dwavesys.com>
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Date: Sun, 4 Jul 2021 12:50:34 -0700
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Subject: [PATCH] Fix for sbcl 2.1.6
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---
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compat.lisp | 30 +++++++++++++++---------------
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1 file changed, 15 insertions(+), 15 deletions(-)
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diff --git a/compat.lisp b/compat.lisp
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index 95a9869..ea6d1a1 100644
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--- a/compat.lisp
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+++ b/compat.lisp
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@@ -1,12 +1,13 @@
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(in-package #:png)
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-#+sbcl ; Present in SBCL 1.0.24.
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-(declaim (ftype (function (array) (values (simple-array * (*)) &optional))
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- array-storage-vector))
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-
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#+sbcl
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-(defun array-storage-vector (array)
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- "Returns the underlying storage vector of ARRAY, which must be a non-displaced array.
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+(macrolet ((make-array-storage-vector ()
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+ (let ((%array-data-vector (or (find-symbol "%ARRAY-DATA-VECTOR" :sb-kernel)
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+ (find-symbol "%ARRAY-DATA" :sb-kernel)))) ;; renamed in sbcl 2.1.6
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+ `(progn
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+ (declaim (ftype (function (array) (values (simple-array * (*)) &optional)) array-storage-vector))
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+ (defun array-storage-vector (array)
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+ "Returns the underlying storage vector of ARRAY, which must be a non-displaced array.
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In SBCL, if ARRAY is a of type \(SIMPLE-ARRAY * \(*)), it is its own storage
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vector. Multidimensional arrays, arrays with fill pointers, and adjustable
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@@ -16,15 +17,14 @@ ARRAY, which this function returns.
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Important note: the underlying vector is an implementation detail. Even though
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this function exposes it, changes in the implementation may cause this
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function to be removed without further warning."
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- ;; KLUDGE: Without TRULY-THE the system is not smart enough to
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- ;; figure out that the return value is always of the known type.
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- (sb-ext:truly-the (simple-array * (*))
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- (if (sb-kernel:array-header-p array)
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- (if (sb-kernel:%array-displaced-p array)
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- (error "~S cannot be used with displaced arrays. Use ~S instead."
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- 'array-storage-vector 'array-displacement)
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- (sb-kernel:%array-data-vector array))
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- array)))
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+ (sb-ext:truly-the (simple-array * (*))
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+ (if (sb-kernel:array-header-p array)
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+ (if (sb-kernel:%array-displaced-p array)
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+ (error "~S cannot be used with displaced arrays. Use ~S instead."
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+ 'array-storage-vector 'array-displacement)
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+ (,%array-data-vector array))
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+ array)))))))
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+ (make-array-storage-vector))
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#+allegro
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(defmacro with-pointer-to-array-data ((ptr-var array) &body body)
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--
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2.33.0
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