Re: [Tinycc-devel] Segmentation fault compiling broken 1-liner

[Henrik Nordstrom]

On Tue, 30 Aug 2005, Antti-Juhani Kaijanaho wrote:

> There is no declaration of printf in the file (either included or
> otherwise), and since printf is a stdarg function, a prototype must be
> in scope.

Says who? To my best knowledge that does not make it invalid C. Variable 
arguments have existed since K&R where function prototypes didn't even 
exists..  but maybe you are correct and there is some platforms where the 
ABI requires functions with variable arguments to be called in a different 
manner than normal functions making this requirement of having them 
declared before use. But even then it is not invalid C, just incorrect use 
of the printf function and quite likely to crash at runtime when running 
the resulting executable due to mismatch between compilation unit and 
library ABI.

Also the return type is optional, and defaults (per K&R) to int if not 
specified.

The missing () on main does however make it very invalid C.

Regards
Henrik