Date: Tue, 10 Oct 2017 22:09:49 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: [PATCH] stdio: implement fopencookie(3) On Tue, Oct 10, 2017 at 06:58:30PM -0400, Morten Welinder wrote: > > Also note that while standard functions in POSIX can additionally be > > defined as function-like macros, they can't be object-like macros, so > > (*read), etc. are safe due to the parentheses. > > I'm not sure that's true. Solaris defines (or used to, at least), > say, "open" to "open64" under the right conditions. With that, actual > field names in the structure ends up being dependent on #include > order. Quite a mess and worse for "stat" since "struct stat" gets > renamed in addition to the function. > > "#define open my_table.my_open" would be fun too. I haven't seen that > in the wild, though. If so that's just a bug in Solaris's headers, for two reasons: (1) It's an object-like macro not a function-like macro. (2) It doesn't work if the application does #undef open, which is explicitly permitted. Rich
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.