[Bug libstdc++/18644] [3.3/3.4/4.0 regression] -Wsynth warning in <complex>

[bangerth at ices dot utexas dot edu]

------- Additional Comments From bangerth at ices dot utexas dot edu  2004-11-26 04:33 -------
Subject: Re:  [3.3/3.4/4.0 regression] -Wsynth warning
 in <complex>


> The issue is not taking the address of the copy constructor, but the
> change in calling convention.  It you declare a copy consttuctor, you
> change the ABI in the sense that the compiler is now forced to pass
> everything in stack, where it used to pass it in register.

Ah, ok, I didn't know about these subtleties.

> The diagnostic is nonsensical.  The fix is to fix the diagnostic, not
> to paper over the problem.

That's certainly the best solution. -Wsynth should just not trigger in 
libstdc++ headers.

Thanks
  W.

-------------------------------------------------------------------------
Wolfgang Bangerth              email:            bangerth@ices.utexas.edu
                                www: http://www.ices.utexas.edu/~bangerth/



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18644