From 923b8fadd5fe6af56197cf3916a3292b60c0e8db Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 28 Nov 2017 10:45:44 -0500
Subject: IWYU: Add mappings for std::enable_if on chrono durations

IWYU incorrectly classifies this internal STL type as not internal, and
suggests including `<type_traits>` for it.  Work around the problem by
mapping the offending names to a file that we always include.

See include-what-you-use issue 434.
---
 Source/CTest/cmCTestBuildHandler.cxx     | 1 -
 Source/CTest/cmCTestConfigureHandler.cxx | 1 -
 Source/CTest/cmCTestCoverageHandler.cxx  | 1 -
 Source/CTest/cmCTestMemCheckHandler.cxx  | 1 -
 Source/CTest/cmCTestScriptHandler.cxx    | 1 -
 Source/CTest/cmCTestTestHandler.cxx      | 1 -
 Source/CTest/cmCTestUpdateHandler.cxx    | 1 -
 Source/CTest/cmProcess.cxx               | 1 -
 Utilities/IWYU/mapping.imp               | 4 ++++
 9 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/Source/CTest/cmCTestBuildHandler.cxx b/Source/CTest/cmCTestBuildHandler.cxx
index f25c9c3..79446e8 100644
--- a/Source/CTest/cmCTestBuildHandler.cxx
+++ b/Source/CTest/cmCTestBuildHandler.cxx
@@ -17,7 +17,6 @@
 #include <set>
 #include <stdlib.h>
 #include <string.h>
-#include <type_traits>
 
 static const char* cmCTestErrorMatches[] = {
   "^[Bb]us [Ee]rror",
diff --git a/Source/CTest/cmCTestConfigureHandler.cxx b/Source/CTest/cmCTestConfigureHandler.cxx
index ab77986..7c5b3b0 100644
--- a/Source/CTest/cmCTestConfigureHandler.cxx
+++ b/Source/CTest/cmCTestConfigureHandler.cxx
@@ -9,7 +9,6 @@
 #include <chrono>
 #include <ostream>
 #include <string>
-#include <type_traits>
 
 cmCTestConfigureHandler::cmCTestConfigureHandler()
 {
diff --git a/Source/CTest/cmCTestCoverageHandler.cxx b/Source/CTest/cmCTestCoverageHandler.cxx
index bbfe9bd..69cd08c 100644
--- a/Source/CTest/cmCTestCoverageHandler.cxx
+++ b/Source/CTest/cmCTestCoverageHandler.cxx
@@ -27,7 +27,6 @@
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
-#include <type_traits>
 #include <utility>
 
 class cmMakefile;
diff --git a/Source/CTest/cmCTestMemCheckHandler.cxx b/Source/CTest/cmCTestMemCheckHandler.cxx
index 2e7874d..57d2489 100644
--- a/Source/CTest/cmCTestMemCheckHandler.cxx
+++ b/Source/CTest/cmCTestMemCheckHandler.cxx
@@ -14,7 +14,6 @@
 #include <iostream>
 #include <sstream>
 #include <string.h>
-#include <type_traits>
 
 struct CatToErrorType
 {
diff --git a/Source/CTest/cmCTestScriptHandler.cxx b/Source/CTest/cmCTestScriptHandler.cxx
index 3bf27a0..d2ad8c5 100644
--- a/Source/CTest/cmCTestScriptHandler.cxx
+++ b/Source/CTest/cmCTestScriptHandler.cxx
@@ -10,7 +10,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <type_traits>
 #include <utility>
 
 #include "cmCTest.h"
diff --git a/Source/CTest/cmCTestTestHandler.cxx b/Source/CTest/cmCTestTestHandler.cxx
index e7c719c..6d8180c 100644
--- a/Source/CTest/cmCTestTestHandler.cxx
+++ b/Source/CTest/cmCTestTestHandler.cxx
@@ -16,7 +16,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
-#include <type_traits>
 
 #include "cmAlgorithms.h"
 #include "cmCTest.h"
diff --git a/Source/CTest/cmCTestUpdateHandler.cxx b/Source/CTest/cmCTestUpdateHandler.cxx
index f86d4a3..809abd1 100644
--- a/Source/CTest/cmCTestUpdateHandler.cxx
+++ b/Source/CTest/cmCTestUpdateHandler.cxx
@@ -20,7 +20,6 @@
 #include <chrono>
 #include <memory> // IWYU pragma: keep
 #include <sstream>
-#include <type_traits>
 
 static const char* cmCTestUpdateHandlerUpdateStrings[] = {
   "Unknown", "CVS", "SVN", "BZR", "GIT", "HG", "P4"
diff --git a/Source/CTest/cmProcess.cxx b/Source/CTest/cmProcess.cxx
index 78dd598..c889174 100644
--- a/Source/CTest/cmProcess.cxx
+++ b/Source/CTest/cmProcess.cxx
@@ -4,7 +4,6 @@
 
 #include "cmProcessOutput.h"
 #include <iostream>
-#include <type_traits>
 
 cmProcess::cmProcess()
 {
diff --git a/Utilities/IWYU/mapping.imp b/Utilities/IWYU/mapping.imp
index 6477d59..221da06 100644
--- a/Utilities/IWYU/mapping.imp
+++ b/Utilities/IWYU/mapping.imp
@@ -63,6 +63,10 @@
   { symbol: [ "std::__decay_and_strip<const std::basic_string<char> &>::__type", private, "\"cmConfigure.h\"", public ] },
   { symbol: [ "std::__decay_and_strip<cmFindPackageCommand::PathLabel &>::__type", private, "\"cmConfigure.h\"", public ] },
   { symbol: [ "std::__decay_and_strip<__gnu_cxx::__normal_iterator<const cmCTestTestHandler::cmCTestTestProperties *, std::vector<cmCTestTestHandler::cmCTestTestProperties, std::allocator<cmCTestTestHandler::cmCTestTestProperties> > > &>::__type", private, "\"cmConfigure.h\"", public ] },
+  { symbol: [ "std::__success_type<std::chrono::duration<double, std::ratio<1, 1> > >::type", private, "\"cmConfigure.h\"", public ] },
+  { symbol: [ "std::enable_if<true, std::chrono::duration<long, std::ratio<1, 1> > >::type", private, "\"cmConfigure.h\"", public ] },
+  { symbol: [ "std::enable_if<true, std::chrono::duration<long, std::ratio<60, 1> > >::type", private, "\"cmConfigure.h\"", public ] },
+  { symbol: [ "std::enable_if<true, std::chrono::duration<long, std::ratio<1, 1000> > >::type", private, "\"cmConfigure.h\"", public ] },
 
   # KWIML
   { include: [ "<stdint.h>", public, "\"cm_kwiml.h\"", public ] },
-- 
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