From b66d61a8d07718ad496080c86e6f4299e50d7c55 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 8 Jul 2019 14:34:29 -0400
Subject: cmGlobalGenerator: Do not persist alias targets across configures

In `ccmake` a single global generator instance may be used for multiple
configure step runs.  The `cmGlobalGenerator::ClearGeneratorMembers`
method is supposed to clear global state that is specific to each
configure run but forgot to clear alias targets.

Fixes: #19457
---
 Source/cmGlobalGenerator.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index df0f33f..4eba4ff 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -1681,6 +1681,7 @@ void cmGlobalGenerator::ClearGeneratorMembers()
   cmDeleteAll(this->LocalGenerators);
   this->LocalGenerators.clear();
 
+  this->AliasTargets.clear();
   this->ExportSets.clear();
   this->TargetDependencies.clear();
   this->TargetSearchIndex.clear();
-- 
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