Re: gamma warnings bug
- From: Owen Taylor <otaylor gtk org>
- To: "K. Richard Pixley" <rich kyoto noir com>
- Cc: gtk-list redhat com
- Subject: Re: gamma warnings bug
- Date: 24 May 1998 10:47:59 -0400
"K. Richard Pixley" <firstname.lastname@example.org> writes:
> On my system, (originally redhat-5.0), the usage of "gamma" to declare
> function arguments collides with /usr/include/mathcalls.h producing...
> gcc -DHAVE_CONFIG_H -I. -I. -I. -I/usr/local/include -I/usr/lib/glib/include -I/usr/X11R6/include -g -Wall -Wshadow -Wmissing-prototypes -Wstrict-prototypes -Winline -Wpointer-arith -O6 -pipe -fstrength-reduce -fexpensive-optimizations -finline-functions -frerun-cse-after-loop -freg-struct-return -fnonnull-objects -c -fPIC -DPIC glemisc.c
> In file included from /usr/include/gtk/gtkcolorsel.h:30,
> from /usr/include/gtk/gtk.h:36,
> from glemisc.h:22,
> from glemisc.c:20:
> /usr/include/gtk/gtkpreview.h:128: warning: declaration of `gamma' shadows global declaration
> I think those arguments should be renamed.
To my understanding, parameter names in function prototypes
are basically ignored. So there is no way that:
void gtk_preview_set_gamma (double gamma);
Could shadow the global gamma() declaration.
I'm inclined say you should either drop the -Wshadow, or ignore the
warning. Generally, once you start adding warnings beyond -Wall, you
tend to get lots of warnings about things which aren't errors at all.
On the other hand, the name could be changed to _gamma, or gam,
but who knows if somebody would include a header file with functions
by those names? It seems like a bit of a lost cause.
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