From 0df559832bdc629df333b57c798d42e77716a94b Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Fri, 16 Mar 2018 11:56:54 -0400
Subject: cmPolicies: Pass policy version as std::string

---
 Source/cmMakefile.cxx | 4 ++--
 Source/cmMakefile.h   | 2 +-
 Source/cmPolicies.cxx | 9 +++++----
 Source/cmPolicies.h   | 3 ++-
 4 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 9e53579..23883f7 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -4149,9 +4149,9 @@ void cmMakefile::PopSnapshot(bool reportError)
   assert(this->StateSnapshot.IsValid());
 }
 
-bool cmMakefile::SetPolicyVersion(const char* version)
+bool cmMakefile::SetPolicyVersion(std::string const& version_min)
 {
-  return cmPolicies::ApplyPolicyVersion(this, version);
+  return cmPolicies::ApplyPolicyVersion(this, version_min);
 }
 
 bool cmMakefile::HasCMP0054AlreadyBeenReported(
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 95ba53a..e90cf2f 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -285,7 +285,7 @@ public:
   bool SetPolicy(cmPolicies::PolicyID id, cmPolicies::PolicyStatus status);
   bool SetPolicy(const char* id, cmPolicies::PolicyStatus status);
   cmPolicies::PolicyStatus GetPolicyStatus(cmPolicies::PolicyID id) const;
-  bool SetPolicyVersion(const char* version);
+  bool SetPolicyVersion(std::string const& version_min);
   void RecordPolicies(cmPolicies::PolicyMap& pm);
   //@}
 
diff --git a/Source/cmPolicies.cxx b/Source/cmPolicies.cxx
index e7d1b72..7e3bd78 100644
--- a/Source/cmPolicies.cxx
+++ b/Source/cmPolicies.cxx
@@ -153,12 +153,13 @@ static bool GetPolicyDefault(cmMakefile* mf, std::string const& policy,
   return true;
 }
 
-bool cmPolicies::ApplyPolicyVersion(cmMakefile* mf, const char* version)
+bool cmPolicies::ApplyPolicyVersion(cmMakefile* mf,
+                                    std::string const& version_min)
 {
   std::string ver = "2.4.0";
 
-  if (version && strlen(version) > 0) {
-    ver = version;
+  if (!version_min.empty()) {
+    ver = version_min;
   }
 
   unsigned int majorVer = 2;
@@ -200,7 +201,7 @@ bool cmPolicies::ApplyPolicyVersion(cmMakefile* mf, const char* version)
        tweakVer > cmVersion::GetTweakVersion())) {
     std::ostringstream e;
     e << "An attempt was made to set the policy version of CMake to \""
-      << version << "\" which is greater than this version of CMake.  "
+      << version_min << "\" which is greater than this version of CMake.  "
       << "This is not allowed because the greater version may have new "
       << "policies not known to this CMake.  "
       << "You may need a newer CMake version to build this project.";
diff --git a/Source/cmPolicies.h b/Source/cmPolicies.h
index a784f98..2198184 100644
--- a/Source/cmPolicies.h
+++ b/Source/cmPolicies.h
@@ -288,7 +288,8 @@ public:
   static cmPolicies::PolicyStatus GetPolicyStatus(cmPolicies::PolicyID id);
 
   ///! Set a policy level for this listfile
-  static bool ApplyPolicyVersion(cmMakefile* mf, const char* version);
+  static bool ApplyPolicyVersion(cmMakefile* mf,
+                                 std::string const& version_min);
 
   ///! return a warning string for a given policy
   static std::string GetPolicyWarning(cmPolicies::PolicyID id);
-- 
cgit v0.12