Wireshark-bugs: [Wireshark-bugs] [Bug 7778] Unable to compile stock lemon.c due to errors.
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Mon, 1 Oct 2012 10:59:06 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7778

--- Comment #3 from Guy Harris <guy@xxxxxxxxxxxx> 2012-10-01 10:59:06 PDT ---
That is equivalent to removing the _U_ and subsequently renaming the argc and
errsym parameters to argc_U_ and errsym_U_, so it's equivalent to removing the
_U_.

In the current top-of-trunk version of Wireshark, config.h defines _U_ as
nothing if the compiler doesn't support marking parameters as unused (perhaps
because it doesn't check for unused variables and parameters) and as the
appropriate tag if it does - for example, on my machine, where it's currently
compiling with (llvm-)gcc, config.h includes the line

    #define _U_ __attribute__((unused))

If whichever config.h is included by lemon.c - which is the config.h in the
top-level directory when Lemon is built with the standard generated Makefiles,
as it's built with "gcc -I../..   -o lemon lemon.c" - defines _U_, as it does,
this isn't an issue.

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