Bug#243507: g++-3.3: broken fprintf output for floating-point formatted numbers
On Tue, Apr 13, 2004 at 18:15:25 +0400, Nikita V. Youshchenko wrote:
> It's a bug in the code, not in the compiler. Compiler can't do any
> type-checking for variable argument functions.
>
> Well, gcc has some logic implemented specially for printf and company,
> maybe it should be fixed.
When I add a line
printf("%f\n", 0);
I do get a warning with -Wall:
test.cc: In function `int main()':
test.cc:6: warning: double format, different type arg (arg 2)
Similarly, /usr/include/stdio.h specifies __printf__ attributes [*] for
functions like snprintf, vsnprintf, vasprintf, asprintf, vdprintf and
dprintf. It does not do so for vfprintf. This looks like a bug in libc6-dev.
Ray
[*] See http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
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