[Bug c/26005] Non-existent function/macro isinf() - correctly rejected by gcc - accepted by gcc -O

[ebotcazou at gcc dot gnu dot org]

------- Comment #9 from ebotcazou at gcc dot gnu dot org  2006-01-29 08:55 -------
> Yes of course these suggestions would work fine, but they would be in the
> nature of workarounds.  I was merely trying to illustrate that others also seem
> to believe that the absence of a definition (macro or function) and/or the
> absence of the function itself should cause a compile-time error.

In a freestanding environment (see the entry for -ffreestanding in the manual)
but certainly not in the default gnu89 mode.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26005