Crash in windows, when string flag longer then default value.

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Define flag as: DEFINE_string(LogPath, "..\\..\\..\\logs", "The path to save 
log files.");
2. Run as: <program_name>.exe --LogPath="..\\..\\..\\logs\\1"
3. Program crashed at gflags.cc:441 void FlagValue::CopyFrom(const FlagValue& x)

What is the expected output? What do you see instead?
No crash

What version of the product are you using? On what operating system?
gflags 2.0, VS 2008

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 1 Nov 2012 at 1:53