std::fstream accepts filename as std::string in C++11.

Finally.

src/Plugins/TgaImporter/TgaImporter.cpp

@@ -59,7 +59,7 @@ void TgaImporter::doOpenData(const Containers::ArrayReference<const unsigned cha
 }
 
 void TgaImporter::doOpenFile(const std::string& filename) {
-    in = new std::ifstream(filename.c_str());
+    in = new std::ifstream(filename);
     if(in->good()) return;
 
     Error() << "Trade::TgaImporter::openFile(): cannot open file" << filename;

src/Shader.cpp

@@ -605,7 +605,7 @@ Shader& Shader::addSource(std::string source) {
 
 Shader& Shader::addFile(const std::string& filename) {
     /* Open file */
-    std::ifstream file(filename.c_str());
+    std::ifstream file(filename);
     CORRADE_ASSERT(file.good(), "Shader file " << '\'' + filename + '\'' << " cannot be opened.", *this);
 
     /* Get size of shader and initialize buffer */