[ragel-users] Build failures with GCC 4.4

Diego E. “Flameeyes” Pettenò flameeyes at gmail.com
Tue May 19 18:44:47 UTC 2009

Seems like yesterday I tried with the “wrong” compiler (that is, the
compiler that is actually used rather than the one I should test with).

While GCC 4.3 compiles Ragel 6.5 fine, GCC 4.4 errors out, because the
string functions are now declared in such a way that they return “const
char *” when given “const char *” and “char *” when given “char *”.

I'm attaching the half good part of the patch I've applied to the Gentoo
ebuild, the other half is actually just a const_cast which is _nasty_;
the problem is at main.c:339; the eq variable is a pointer to
non-constant, and is indeed modified on line 342.

The solution would be, I guess, to use strncmp instead of setting eq to
\0. This way you never modify the string and you can use constant


Diego Elio Pettenò — “Flameeyes”

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