[Bug c/16554] compare on address of global variable always evals to non-zero

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-07-15 00:34 -------
You want to mark the global variable as weak to change how gcc gets rid of the if.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16554