.*?
is invalid. Try the following code:
main.cpp
#include <QString>
#include <QDebug>
#include <QRegExp>
int main()
{
QString mystr = "te{foo}st";
qDebug() << mystr.remove(QRegExp("\\{(.*)\\}"));
return 0;
}
Compilation
This may not be the exact command you need to run, so try to adjust the concept for your particular scenario.
g++ -I/usr/include/qt/QtCore -I/usr/include/qt -fPIC -lQt5Core main.cpp && ./a.out
Output: "test"