CppTools: Add diagnostic message for non-existent absolute paths

Change-Id: I9a05a92c1adc37db0c918127715714d1f6d2a78d
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

2 files changed, 7 insertions, 4 deletions

diff --git a/src/plugins/cpptools/cpppreprocessor.cpp b/src/plugins/cpptools/cpppreprocessor.cpp
index dd185a7e393..b2768850013 100644
--- a/src/plugins/cpptools/cpppreprocessor.cpp
+++ b/src/plugins/cpptools/cpppreprocessor.cpp
@@ -235,10 +235,12 @@ QString CppPreprocessor::cleanPath(const QString &path)
 
 QString CppPreprocessor::resolveFile_helper(const QString &fileName, IncludeType type)
 {
-    const QFileInfo fileInfo(fileName);
-    if (isInjectedFile(fileName) || fileInfo.isAbsolute())
+    if (isInjectedFile(fileName))
         return fileName;
 
+    if (QFileInfo(fileName).isAbsolute())
+        return checkFile(fileName) ? fileName : QString();
+
     if (type == IncludeLocal && m_currentDoc) {
         const QFileInfo currentFileInfo(m_currentDoc->fileName());
         const QString path = cleanPath(currentFileInfo.absolutePath()) + fileName;
diff --git a/src/plugins/cpptools/cpppreprocessor_test.cpp b/src/plugins/cpptools/cpppreprocessor_test.cpp
index 3178aa9771c..c37aa73b1ee 100644
--- a/src/plugins/cpptools/cpppreprocessor_test.cpp
+++ b/src/plugins/cpptools/cpppreprocessor_test.cpp
@@ -168,6 +168,7 @@ void CppToolsPlugin::test_cpppreprocessor_includes_allDiagnostics()
     QByteArray source =
         "#include <NotResolvable1>\n"
         "#include <NotResolvable2>\n"
+        "#include \"/some/nonexisting/file123.h\"\n"
         "\n"
         ;
 
@@ -176,6 +177,6 @@ void CppToolsPlugin::test_cpppreprocessor_includes_allDiagnostics()
     QVERIFY(document);
 
     QCOMPARE(document->resolvedIncludes().size(), 0);
-    QCOMPARE(document->unresolvedIncludes().size(), 2);
-    QCOMPARE(document->diagnosticMessages().size(), 2);
+    QCOMPARE(document->unresolvedIncludes().size(), 3);
+    QCOMPARE(document->diagnosticMessages().size(), 3);
 }