COLLAPSE_STATIC_LOCALS.cpp

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// checking static locals in inline code
 
 
#if 0   // guard invalid preprocessor symbol below
 
   // establish a dependency on collapse_static_locals.lib.*
#  ifndef _RWSTD_NO_collapse_static_locals.lib
 
     // link this compiled translation unit with the lib below
     // LDOPTS = collapse_static_locals.lib$(LIBSUFFIX)
 
#  endif   // _RWSTD_NO_collapse_static_locals.lib
#endif   // 0
 
 
// also defined in collapse_static_locals.lib.cpp
inline int foo ()
{
    // multiple instances of `i' must be collapsed
    static int i = 0;
    return i++;
}
 
// bar() returns foo()
extern int bar ();
 
 
int main ()
{
    // compilers that corectly collapse static locals will
    // behave as commented below (others will return 0 from bar())
 
    int i = foo ();   // returns 0
    int j = bar ();   // should return 1
 
    return !(i != j);
}