std::string::operator== fails for equal strings?

[pheres]

Hi,

in this simple peace of code I compare std::string's for equality:

const int
UserTypes::getInt(const std::string& str) const throw(NoExistingTypeException)
{
	for
	(
		std::map<int, std::string>::const_iterator citer = mUserTypesMap.begin();
		citer != mUserTypesMap.end();
		++citer
	)
	{
		if(citer->second == str)
		{
			return citer->first;
		}
	}
	
	throw NoExistingTypeException();
}

I've checked the values of the two compared strings inside the debugger. They are 100% equal (or I got crazy somehow) but the operator returns false. I guess I'm doing something really stupid but I'm unable to see what this morning.
Thank you in advance!

[matsp]

I doubt they are identical. Are you sure you are not missing some unprintable last character on one side or the other. Are the lengths the same?

--
Mats

[Elysia]

They can't be equal if operator == fails.
Check for case error, mismatches characterd (I and l maybe?), and hidden characters.

[pheres]

You are right, one of the strings had an additional character (0x00) appended. Thanks

[brewbuck]

You are right, one of the strings had an additional character (0x00) appended. Thanks

A great piece of evidence that std::string is not a null-terminated format. The presence of the null terminator made a difference.

I suspect that some piece of code which converts from C-style string to std::string is erroneously including the null terminator in the total count.

[pheres]

Exactly. I wrongly passed strlen(char_array)+1 to the string-constructor somethere. C-strings are a bit confusing sometimes if one is not used to them and has to interface some c-api from time to time.