From d2a6fc397ee982936dee7dd5692b1481bcd9fe8f Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 28 Jun 2003 15:47:20 +0000
Subject: Add support for 'unsigned' command line arguments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6928 91177308-0d34-0410-b5e6-96231b3b80d8
---
 support/lib/Support/CommandLine.cpp | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'support/lib')

diff --git a/support/lib/Support/CommandLine.cpp b/support/lib/Support/CommandLine.cpp
index a0eca7a8ed..bbf996af7b 100644
--- a/support/lib/Support/CommandLine.cpp
+++ b/support/lib/Support/CommandLine.cpp
@@ -575,14 +575,25 @@ bool parser<bool>::parse(Option &O, const char *ArgName,
 //
 bool parser<int>::parse(Option &O, const char *ArgName,
                         const std::string &Arg, int &Value) {
-  const char *ArgStart = Arg.c_str();
   char *End;
-  Value = (int)strtol(ArgStart, &End, 0);
+  Value = (int)strtol(Arg.c_str(), &End, 0);
   if (*End != 0) 
     return O.error(": '" + Arg + "' value invalid for integer argument!");
   return false;
 }
 
+// parser<unsigned> implementation
+//
+bool parser<unsigned>::parse(Option &O, const char *ArgName,
+                             const std::string &Arg, unsigned &Value) {
+  char *End;
+  long long int V = strtoll(Arg.c_str(), &End, 0);
+  Value = (unsigned)V;
+  if (*End != 0 || V < 0 || Value != V) 
+    return O.error(": '" + Arg + "' value invalid for uint argument!");
+  return false;
+}
+
 // parser<double>/parser<float> implementation
 //
 static bool parseDouble(Option &O, const std::string &Arg, double &Value) {
-- 
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