[Bug middle-end/18882] [3.3/3.4 Regression] wrong results with complex long double

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-12-08 16:29 -------
Here's my shortest version: 
------------------- 
extern "C" void abort (); 
  
struct C { 
    __complex__ long double c; 
}; 
 
int main() { 
  C x = {2+2i}; 
   
  int n = 1; 
  C y = (n==1) ? x : (C){3+3i}; 
  if (__imag__ y.c != 2) 
    abort (); 
}  
---------------------- 
This fails on 3.3 and 3.4 branches: 
 
g/x> /home/bangerth/bin/gcc-3.2*/bin/c++ x.cc ; ./a.out  
 
g/x> /home/bangerth/bin/gcc-3.3*/bin/c++ x.cc ; ./a.out  
Aborted 
 
g/x> /home/bangerth/bin/gcc-3.4*/bin/c++ x.cc ; ./a.out  
Aborted 
 
g/x> /home/bangerth/bin/gcc-4*/bin/c++ x.cc ; ./a.out  
 
W. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[3.3/3.4 Regression] wrong  |[3.3/3.4 Regression] wrong
                   |results of pow( complex<long|results with complex long
                   |double>(2, 1), odd integer )|double


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18882