even more clang-tidy

Author: dmah42

src/benchmark.cc

@@ -595,16 +595,15 @@ size_t RunSpecifiedBenchmarks(BenchmarkReporter* display_reporter,
   std::string const& fname = FLAGS_benchmark_out;
   if (fname.empty() && file_reporter) {
     Err << "A custom file reporter was provided but "
-           "--benchmark_out=<file> was not specified."
-        << std::endl;
+           "--benchmark_out=<file> was not specified.\n";
     Out.flush();
     Err.flush();
     std::exit(1);
   }
   if (!fname.empty()) {
     output_file.open(fname);
     if (!output_file.is_open()) {
-      Err << "invalid file name: '" << fname << "'" << std::endl;
+      Err << "invalid file name: '" << fname << "'\n";
       Out.flush();
       Err.flush();
       std::exit(1);

src/benchmark_register.cc

@@ -125,7 +125,7 @@ bool BenchmarkFamilies::FindBenchmarks(
     is_negative_filter = true;
   }
   if (!re.Init(spec, &error_msg)) {
-    Err << "Could not compile benchmark re: " << error_msg << std::endl;
+    Err << "Could not compile benchmark re: " << error_msg << '\n';
     return false;
   }
 

src/benchmark_runner.h

@@ -39,7 +39,7 @@ struct RunResults {
 };
 
 struct BENCHMARK_EXPORT BenchTimeType {
-  enum { ITERS, TIME } tag;
+  enum : uint8_t { ITERS, TIME } tag;
   union {
     IterationCount iters;
     double time;

src/sysinfo.cc

@@ -84,7 +84,7 @@
 namespace benchmark {
 namespace {
 
-void PrintImp(std::ostream& out) { out << std::endl; }
+void PrintImp(std::ostream& out) { out << '\n'; }
 
 template <class First, class... Rest>
 void PrintImp(std::ostream& out, First&& f, Rest&&... rest) {
@@ -528,8 +528,7 @@ class ThreadAffinityGuard final {
   ThreadAffinityGuard() : reset_affinity(SetAffinity()) {
     if (!reset_affinity)
       std::cerr << "***WARNING*** Failed to set thread affinity. Estimated CPU "
-                   "frequency may be incorrect."
-                << std::endl;
+                   "frequency may be incorrect.\n";
   }
 
   ~ThreadAffinityGuard() {

src/timers.cc

@@ -108,7 +108,7 @@ double MakeTime(struct timespec const& ts) {
 #endif
 
 BENCHMARK_NORETURN static void DiagnoseAndExit(const char* msg) {
-  std::cerr << "ERROR: " << msg << std::endl;
+  std::cerr << "ERROR: " << msg << '\n';
   std::exit(EXIT_FAILURE);
 }
 

test/filter_test.cc

@@ -99,7 +99,7 @@ int main(int argc, char** argv) {
     if (reports_count != expected_reports) {
       std::cerr << "ERROR: Expected " << expected_reports
                 << " tests to be run but reported_count = " << reports_count
-                << std::endl;
+                << '\n';
       return -1;
     }
 
@@ -108,7 +108,7 @@ int main(int argc, char** argv) {
     if (num_families != expected_reports) {
       std::cerr << "ERROR: Expected " << expected_reports
                 << " test families to be run but num_families = "
-                << num_families << std::endl;
+                << num_families << '\n';
       return -1;
     }
   }

test/output_test_helper.cc

@@ -490,7 +490,7 @@ static std::string GetTempFileName() {
     std::string name = GetRandomFileName();
     if (!FileExists(name)) return name;
   }
-  std::cerr << "Failed to create unique temporary file name" << std::endl;
+  std::cerr << "Failed to create unique temporary file name\n";
   std::abort();
 }