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author | Andy Wingo <wingo@pobox.com> | 2010-08-04 21:48:00 +0200 |
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committer | Andy Wingo <wingo@pobox.com> | 2010-08-05 10:54:37 +0200 |
commit | 3de9a08715a499079a9e22ea76a688a6c5381b42 (patch) | |
tree | 10ebdb1d7c0c7fc59af2d30bea119033b8f6aed8 | |
parent | 5c8c9d05aea1f4d65ae926321ead0b77e05e3f1c (diff) | |
download | guile-3de9a08715a499079a9e22ea76a688a6c5381b42.tar.gz |
fix vector-move-right! and vector-move-left!
* libguile/vectors.c (scm_vector_move_left_x, scm_vector_move_right_x):
Fix some bugs reported by Michael Lucy -- both variants would happily
write beyond the end, and vector-move-right! didn't increment the
counter before copying in the reverse direction.
* test-suite/tests/vectors.test ("vector-move-left!"):
("vector-move-right!"): Add tests.
-rw-r--r-- | libguile/vectors.c | 12 | ||||
-rw-r--r-- | test-suite/tests/vectors.test | 81 |
2 files changed, 89 insertions, 4 deletions
diff --git a/libguile/vectors.c b/libguile/vectors.c index eeb856995..074655c7b 100644 --- a/libguile/vectors.c +++ b/libguile/vectors.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1995,1996,1998,1999,2000,2001, 2006, 2008 Free Software Foundation, Inc. +/* Copyright (C) 1995,1996,1998,1999,2000,2001, 2006, 2008, 2010 Free Software Foundation, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -465,7 +465,9 @@ SCM_DEFINE (scm_vector_move_left_x, "vector-move-left!", 5, 0, 0, i = scm_to_unsigned_integer (start1, 0, len1); e = scm_to_unsigned_integer (end1, i, len1); - j = scm_to_unsigned_integer (start2, 0, len2 - (i-e)); + SCM_ASSERT_RANGE (SCM_ARG3, end1, (e-i) < len2); + j = scm_to_unsigned_integer (start2, 0, len2); + SCM_ASSERT_RANGE (SCM_ARG5, start2, j <= len2 - (e - i)); i *= inc1; e *= inc1; @@ -503,7 +505,11 @@ SCM_DEFINE (scm_vector_move_right_x, "vector-move-right!", 5, 0, 0, i = scm_to_unsigned_integer (start1, 0, len1); e = scm_to_unsigned_integer (end1, i, len1); - j = scm_to_unsigned_integer (start2, 0, len2 - (i-e)); + SCM_ASSERT_RANGE (SCM_ARG3, end1, (e-i) < len2); + j = scm_to_unsigned_integer (start2, 0, len2); + SCM_ASSERT_RANGE (SCM_ARG5, start2, j <= len2 - (e - i)); + + j += (e - i); i *= inc1; e *= inc1; diff --git a/test-suite/tests/vectors.test b/test-suite/tests/vectors.test index 738a0828a..c350992f0 100644 --- a/test-suite/tests/vectors.test +++ b/test-suite/tests/vectors.test @@ -1,6 +1,6 @@ ;;;; vectors.test --- test suite for Guile's vector functions -*- scheme -*- ;;;; -;;;; Copyright (C) 2003, 2006 Free Software Foundation, Inc. +;;;; Copyright (C) 2003, 2006, 2010 Free Software Foundation, Inc. ;;;; ;;;; This program is free software; you can redistribute it and/or modify ;;;; it under the terms of the GNU General Public License as published by @@ -41,3 +41,82 @@ (let ((b (make-shared-array #(1) (lambda (x) '(0)) 2))) (equal? b (list->vector (vector->list b)))))) +(with-test-prefix "vector-move-left!" + + (pass-if-exception "before start" exception:out-of-range + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-left! a 3 5 b -1))) + + (pass-if "beginning" + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-left! a 3 5 b 0) + (equal? b #(4 5 30 40 50 60 70 80 90)))) + + (pass-if "middle" + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-left! a 3 5 b 2) + (equal? b #(10 20 4 5 50 60 70 80 90)))) + + (pass-if "overlap -" + (let ((a (vector 1 2 3 4 5 6 7 8 9))) + (vector-move-left! a 3 5 a 2) + (equal? a #(1 2 4 5 5 6 7 8 9)))) + + (pass-if "overlap +" + (let ((a (vector 1 2 3 4 5 6 7 8 9))) + (vector-move-left! a 3 5 a 4) + (equal? a #(1 2 3 4 4 4 7 8 9)))) + + (pass-if "end" + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-left! a 3 5 b 7) + (equal? b #(10 20 30 40 50 60 70 4 5)))) + + (pass-if-exception "past end" exception:out-of-range + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-left! a 3 5 b 8)))) + +(with-test-prefix "vector-move-right!" + + (pass-if-exception "before start" exception:out-of-range + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-right! a 3 5 b -1))) + + (pass-if "beginning" + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-right! a 3 5 b 0) + (equal? b #(4 5 30 40 50 60 70 80 90)))) + + (pass-if "middle" + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-right! a 3 5 b 2) + (equal? b #(10 20 4 5 50 60 70 80 90)))) + + (pass-if "overlap -" + (let ((a (vector 1 2 3 4 5 6 7 8 9))) + (vector-move-right! a 3 5 a 2) + (equal? a #(1 2 5 5 5 6 7 8 9)))) + + (pass-if "overlap +" + (let ((a (vector 1 2 3 4 5 6 7 8 9))) + (vector-move-right! a 3 5 a 4) + (equal? a #(1 2 3 4 4 5 7 8 9)))) + + (pass-if "end" + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-right! a 3 5 b 7) + (equal? b #(10 20 30 40 50 60 70 4 5)))) + + (pass-if-exception "past end" exception:out-of-range + (let ((a (vector 1 2 3 4 5 6 7 8 9)) + (b (vector 10 20 30 40 50 60 70 80 90))) + (vector-move-right! a 3 5 b 8)))) |