c++ - malloc(): memory corruption (fast), std::vector and std::stringstream -

so... got weird one. in following code, receive

*** error in `./a.out': malloc(): memory corruption (fast): 0x00000000011165f0 *** 

on while loop line of below function.

std::vector<std::string> stringsplitter(const std::string & tosplit, char split) {     std::stringstream stream(tosplit);     std::vector<std::string> toreturn;     std::string current;      while (std::getline(stream, current, split))         toreturn.push_back(current);      return toreturn; } 

i have been able reproduce error sending

send allenh1 passwd sup? 

but function works intended when send it

command allenh1 passwd room1 

any ideas?

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the call function comes following lines in function:

   file * fssock = fdopen(fd, "r+");  // read character character until \n found or command string full.    while (commandlinelength < maxcommandline &&     read( fd, &newchar, 1) > 0 ) {      if (newchar == '\n' && prevchar == '\r') {         break;     }      commandline[ commandlinelength ] = newchar;     commandlinelength++;      prevchar = newchar; }  // add null character @ end of string // eliminate last \r commandlinelength--;     commandline[ commandlinelength ] = 0;  printf("received: %s\n", commandline);  std::string input(commandline); std::vector<std::string> byspace = stringsplitter(input, ' '); 

vector<string> split(string str, char delimiter) {   vector<string> internal;   stringstream ss(str); // turn string stream.   string tok;    while(getline(ss, tok, delimiter)) {     internal.push_back(tok);   }    return internal; }