From 0ca5ad237a7ec10a148325b2c3601c024345788c Mon Sep 17 00:00:00 2001
From: noguchi-k <55966120+noguchi-k@users.noreply.github.com>
Date: Sat, 28 Mar 2020 01:29:30 +0900
Subject: denovogear: fixed comparison error (#15638)

---
 var/spack/repos/builtin/packages/denovogear/newmat6.cpp.patch | 11 +++++++++++
 var/spack/repos/builtin/packages/denovogear/package.py        |  2 ++
 2 files changed, 13 insertions(+)
 create mode 100644 var/spack/repos/builtin/packages/denovogear/newmat6.cpp.patch

diff --git a/var/spack/repos/builtin/packages/denovogear/newmat6.cpp.patch b/var/spack/repos/builtin/packages/denovogear/newmat6.cpp.patch
new file mode 100644
index 0000000000..36d2e240cd
--- /dev/null
+++ b/var/spack/repos/builtin/packages/denovogear/newmat6.cpp.patch
@@ -0,0 +1,11 @@
+--- spack-src/src/contrib/newmat/newmat6.cpp.org	2020-03-19 14:06:13.679032667 +0900
++++ spack-src/src/contrib/newmat/newmat6.cpp	2020-03-19 14:07:34.267492838 +0900
+@@ -428,7 +428,7 @@
+ {
+    if (&gm == this) { REPORT tag_val = -1; return; }
+    REPORT
+-   if (indx > 0) { delete [] indx; indx = 0; }
++   if (indx != NULL) { delete [] indx; indx = 0; }
+    ((CroutMatrix&)gm).get_aux(*this);
+    Eq(gm);
+ }
diff --git a/var/spack/repos/builtin/packages/denovogear/package.py b/var/spack/repos/builtin/packages/denovogear/package.py
index 8f475492c1..bc683febef 100644
--- a/var/spack/repos/builtin/packages/denovogear/package.py
+++ b/var/spack/repos/builtin/packages/denovogear/package.py
@@ -25,3 +25,5 @@ class Denovogear(CMakePackage):
     depends_on('zlib', type=('link'))
 
     patch('stream-open.patch', when='@:1.1.1')
+    # fix: ordered comparison between pointer and zero.
+    patch('newmat6.cpp.patch')
-- 
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