From 48e1a44dae8229a83f62cae843d6c5e8a8f2c3ca Mon Sep 17 00:00:00 2001
From: Andreas Schuh <andreas.schuh.84@gmail.com>
Date: Wed, 25 Mar 2015 00:30:40 +0000
Subject: [PATCH] #40 Explicitly check if string length is zero instead of
 casting it to bool

---
 src/gflags.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gflags.cc b/src/gflags.cc
index 07400ad..6be0bab 100644
--- a/src/gflags.cc
+++ b/src/gflags.cc
@@ -1503,13 +1503,13 @@ const char* ProgramInvocationShortName() {        // like the GNU libc fn
 }
 
 void SetUsageMessage(const string& usage) {
-  if (program_usage.length())
+  if (program_usage.length() > 0)
     ReportError(DIE, "ERROR: SetUsageMessage() called twice\n");
   program_usage = usage;      // small memory leak
 }
 
 const char* ProgramUsage() {
-  if (program_usage.length()) {
+  if (program_usage.length() > 0) {
     return program_usage.c_str();
   }
   return "Warning: SetUsageMessage() never called";