>g++ -v
Reading specs from /pd/gcc/2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/specs
gcc version 2.95.2 19991024 (release)

--------------------------- test.cpp ------------------------
#include <iostream>
#include <strstream>
using namespace std;

int main( ) 
{
    char *tmp = "This is a test";
    char tag[100];
    tag[0] = '\0';
    
    istrstream inputStream((const char*)tmp);
    inputStream >> tag;
    cout << tag << endl;
}
-------------------------------- Works ------------------------
> g++ test.cpp
> ./a.out
This
-------------------------------- Crashes ----------------------
> g++ -malign-double test.cpp
> ./a.out
Segmentation fault
-------------------------------- Cause ------------------------
The bit that causes the seg fault is "inputStream >> tag;"