Does anyone know why in XCode, when you do something simple like
string str;
cout << "input string";
getline(cin, str);
cout << str;
you would get malloc: *** error for object 01x100000240: pointer being freed was not allocated error? thanks.
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This looks like a bug in XCode, I'm also getting this problem.kruczkowski– kruczkowski2009-11-29 13:44:03 +00:00Commented Nov 29, 2009 at 13:44
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3 Answers
It's a bug in xcode. To fix it, paste these lines at the very beginning of your program (before any #include statements):
#define _GLIBCXX_FULLY_DYNAMIC_STRING 1
#undef _GLIBCXX_DEBUG
#undef _GLIBCXX_DEBUG_PEDANTIC
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Judah Menter
Defining _GLIBCXX_FULLY_DYNAMIC_STRING=1 everywhere in my project solved it for me. Thanks!
This sounds like a bug in your implementation. You may have left out something important, try a complete test case:
#include <iostream>
#include <ostream>
// iostream not required to declare operator<<(ostream&,char const*)
// but ostream is
#include <string>
int main() {
using namespace std;
cout << "Input: ";
string line;
if (!getline(cin, line)) {
clog << "Input error.\n";
return 1;
}
cout << "You entered: " << line << '\n';
return 0;
}
Comments
I found a couple references to this bug in XCode via Google. The best workaround I found was
The solution is to double-click on the target to open its Info window, go to the Build tab, and scroll down to the "GCC 4.2 - Preprocessing" section. In this section is a setting named "Preprocessor Macros" that by default has two entries, "_GLIBCXX_DEBUG=1" and "_GLIBCXX_DEBUG_PEDANTIC=1". Remove these entries.
