Why do I get this strange output behavior?
- by WilliamKF
I have the following program test.cc:
#include <iostream>
unsigned char bogus1[] = {
// Changing # of periods (0x2e) changes output after periods.
0x2e, 0x2e, 0x2e, 0x2e
};
unsigned int bogus2 = 1816; // Changing this value changes output.
int main()
{
std::clog << bogus1;
}
I build it with:
g++ -g -c -o test.o test.cc; g++ -static-libgcc -o test test.o
Using g++ version 3.4.6
I run it through valgrind and nothing is reported wrong.
However the output has two extra control characters and looks like this:
....
Thats a control-X and a control-G at the end.
If you change the value of bogus2 you get different control characters. If you change the number of periods in the array the issue goes away or changes.
I suspect it is a memory corruption bug in the compiler or iostream package.
What is going on here?
