Very strange stringstream and std::getline behaviour

Question

I'm fightning with a map loading bug in my engine, and finally I found it. However, it seems it's something wrong with stringstream and getline... Minimal code:

#include <string> #include <iostream> #include <sstream> int main(int argc, char **argv) { std::string text = "1!2!6|6|5|"; std::stringstream buffer; buffer << text; // insert to buffer std::string temp; buffer >> temp; // extract buffer << temp; // then insert again (i need it in my code to count characters) // and I can't count it before, as in my code the buffer is filled from file std::string loaded; std::getline(buffer, loaded, '!'); //should instert "1" to loaded std::cout << loaded; //and it displays nothing, debugger shows loaded is empty }

Am I doing something wrong or is it a bug? I'm using g++ 4.7 c++11.

sampson-chen · Accepted Answer · 2012-12-23 14:55:50Z

4

For extracting the string from stringstream in this case, you probably want:

temp = buffer.str();

instead of:

buffer >> temp;

See: extracting formatted (interpreted) data vs. stringstream.str()

edited Dec 23, 2012 at 14:55

answered Dec 23, 2012 at 14:50

sampson-chen

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1 Comment

user1873947 Over a year ago

It works! Thanks a lot. I'll accept your answer when it will be possible.

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