From: leisner@sdsp.mc.xerox.com (Marty Leisner) Subject: Re: A TINY BUG 6 Oct 1997 14:39:39 -0700 Message-ID: <9710062126.AA21944.cygnus.gnu-win32@gnu.sdsp.mc.xerox.com> References: <34391696.27758E19@softway.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: Jason Zions Cc: tage.westlund@stockholm.mail.telia.com, gnu-win32@cygnus.com I agree, but -Wformat should even catch this (without stdio.h) Or use -Wall... > > I have found that the following bad code gives "exception" at run > > time instead of error message at compilation time (b18 Win95): > > > > #include > > main(){ > > printf("%s\n",sizeof(long)); > > } > > No compiler will detect this error at compile-time. The prototype for > printf is (char *, ...); that is, no specific type information for > anything except the first parameter. A compiler would have to read the > first parameter to figure out the expected types for the remaining args, > and much of the time that first parameter is dynamically computed at > runtime instead of being a static string. There are a couple of > lint-like programs that will catch this error with a > compile-time-evaluatable format string, but that's the best you can do. > > Summary: learn more about the language before whining about compiler > errors. This is a programmer bug, not a compiler bug. > > Jason Zions > Softway Systems Inc., makers of OpenNT > http://www.opennt.com > > -- marty leisner@sdsp.mc.xerox.com The Feynman problem solving Algorithm 1) Write down the problem 2) Think real hard 3) Write down the answer Murray Gel-mann in the NY Times - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".