Are ISO C90 compilers still meant to be supported?

[Roland Illig <roland illig gmx de>]

Hi GNOME developers,

I am currently trying to build binary packages of GNOME-2.10 for 
NetBSD-1.6.2, which still uses gcc-2.95 as the default C compiler.

As you perhaps know, ISO C90 does not allow code intermixed with 
declarations, but your code occasionally contains some. It would be 
great if you tried to compile the official releases with an ISO C90 
compiler, such as gcc-2.95.

Example 1:
    gchar *s1 = g_strdup("s1");
    if (strcmp(s1, "s1) == 0) { ... }
    gchar *s2;

Example 2 (tricky):
    gchar *s1;;
    gchar *s2;

    /* note the double ;; behind s1. The second semicolon */
    /* is an empty statement by the grammar of C.         */

Another issue are macros with a variable number of arguments.
Don't say:
#  define PRINT(fmt, ...) fprintf(fmt, ## __VA_ARGS__)
but:
#  define PRINT(fmt, ...) fprintf(fmt , ## __VA_ARGS__)
The space is necessary, as documented in the gcc-2.95 info page. But I 
didn't know it either for a long long time.

I think NetBSD-1.6.2 is not the only platform that uses a C90 compiler 
by default, so it's really worth the effort.

Greetings,

Roland