From 0a3b88254d523ffa819db7a61b9bb53c89bf2c7c Mon Sep 17 00:00:00 2001
From: Max Kahnt <max.kahnt@fu-berlin.de>
Date: Mon, 21 Nov 2016 11:48:54 +0100
Subject: [PATCH] Explicitly check for nullptr.
---
dune/solvers/iterationsteps/blockgssteps.hh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/dune/solvers/iterationsteps/blockgssteps.hh b/dune/solvers/iterationsteps/blockgssteps.hh
index bd68b4cb..f3d17ae7 100644
--- a/dune/solvers/iterationsteps/blockgssteps.hh
+++ b/dune/solvers/iterationsteps/blockgssteps.hh
@@ -57,7 +57,7 @@ void linearStep(const M& m, V& x, const V& b, const BitVector* ignore,
ignore_i = (*ignore)[i];
// Update iterate with correction
- x[i] += localSolver(diag ? *diag : Block(0.0), std::move(ri), ignore_i);
+ x[i] += localSolver(diag != nullptr ? *diag : Block(0.0), std::move(ri), ignore_i);
};
if (direction != Direction::BACKWARD)
--
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