file: Use 'long' to represent the parsed LOCK TIMEOUT value

Convert the StringToInt helper into a StringToLong helper with a 'long'
result type.  This will make the helper more useful to other callers
that want to use strtol.

While at it, also check errno after calling strtol in case the
conversion fails with a range error.

1 files changed, 5 insertions, 4 deletions

diff --git a/Source/cmFileCommand.cxx b/Source/cmFileCommand.cxx
index a6eb8c4..3c2dfa5 100644
--- a/Source/cmFileCommand.cxx
+++ b/Source/cmFileCommand.cxx
@@ -3521,7 +3521,7 @@ bool cmFileCommand::HandleLockCommand(
   };
   Guard guard = GUARD_PROCESS;
   std::string resultVariable;
-  unsigned timeout = static_cast<unsigned>(-1);
+  unsigned long timeout = static_cast<unsigned long>(-1);
 
   // Parse arguments
   if(args.size() < 2)
@@ -3597,15 +3597,16 @@ bool cmFileCommand::HandleLockCommand(
             "expected timeout value after TIMEOUT");
         return false;
         }
-      int scanned;
-      if(!cmSystemTools::StringToInt(args[i].c_str(), &scanned) || scanned < 0)
+      long scanned;
+      if(!cmSystemTools::StringToLong(args[i].c_str(), &scanned)
+         || scanned < 0)
         {
         cmOStringStream e;
         e << "TIMEOUT value \"" << args[i] << "\" is not an unsigned integer.";
         this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
         return false;
         }
-      timeout = static_cast<unsigned>(scanned);
+      timeout = static_cast<unsigned long>(scanned);
       }
     else
       {