From: Stéphane Mottelet <stephane.mottelet@utc.fr>
Date: Fri, 10 Apr 2020 09:19:46 +0000 (+0200)
Subject: * Bug 16350 fixed: now empty sparse bool matrix is false in cond exp
X-Git-Url: http://gitweb.scilab.org/?p=scilab.git;a=commitdiff_plain;h=8e4c2bccea6da400b3fda19de97aa9d971b66b93

* Bug 16350 fixed: now empty sparse bool matrix is false in cond exp

http://bugzilla.scilab.org/show_bug.cgi?id=16350

Change-Id: I626fb459edbeb140b748074232a96abc0b67103b
---

diff --git a/scilab/CHANGES.md b/scilab/CHANGES.md
index 49f0d86..e1772d4 100644
--- a/scilab/CHANGES.md
+++ b/scilab/CHANGES.md
@@ -267,6 +267,7 @@ Bug Fixes
 ### Bugs fixed in 6.1.1:
 * [#3188](https://bugzilla.scilab.org/3188): `part()` was slower than in Scilab 4.1.2.
 * [#16342](https://bugzilla.scilab.org/16342): `strcat()` was much slower in Scilab 6.0.2.
+* [#16350](https://bugzilla.scilab.org/16350): in if/while conditions, the empty sparse boolean was considered as TRUE.
 * [#16365](https://bugzilla.scilab.org/16365): `median(m,"r")` and `median(m,"c")` yielded wrong results (6.1.0 regression)
 
 ### Bugs fixed in 6.1.0:
diff --git a/scilab/modules/ast/includes/types/sparse.hxx b/scilab/modules/ast/includes/types/sparse.hxx
index 7731b46..e662a83 100644
--- a/scilab/modules/ast/includes/types/sparse.hxx
+++ b/scilab/modules/ast/includes/types/sparse.hxx
@@ -599,7 +599,7 @@ struct EXTERN_AST SparseBool : GenericType
 
     bool isTrue()
     {
-        if (static_cast<int>(nbTrue()) == m_iSize)
+        if (m_iSize > 0 && static_cast<int>(nbTrue()) == m_iSize)
         {
             return true;
         }
diff --git a/scilab/modules/ast/tests/nonreg_tests/bug_16350.tst b/scilab/modules/ast/tests/nonreg_tests/bug_16350.tst
new file mode 100644
index 0000000..8af1ee0
--- /dev/null
+++ b/scilab/modules/ast/tests/nonreg_tests/bug_16350.tst
@@ -0,0 +1,23 @@
+// =============================================================================
+// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+// Copyright (C) 2020 - Stéphane MOTTELET
+//
+//  This file is distributed under the same license as the Scilab package.
+// =============================================================================
+//
+// <-- CLI SHELL MODE -->
+// <-- NO CHECK REF -->
+//
+// <-- Non-regression test for bug 16350 -->
+//
+// <-- Bugzilla URL -->
+// http://bugzilla.scilab.org/16350
+//
+// <-- Short Description -->
+// In if/while conditions, the empty sparse boolean is considered as TRUE.
+
+a = sparse(1)<2;
+a(1) = [];
+b = 1;
+if a, b = 2; end
+assert_checkequal(b,1);