Is this a bug ?
critter phk> cat /tmp/_.c #include <stdio.h> struct foo { }; int main(int argc, char **argv) { struct foo bar; printf("%jd %jd\n", sizeof(struct foo), sizeof(bar)); return (0); } critter phk> cc -o /tmp/a.out /tmp/_.c critter phk> /tmp/a.out 0 0 critter phk> c++ -o /tmp/a.out /tmp/_.c c++: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated [-Wdeprecated] critter phk> /tmp/a.out 1 1 -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.