Bug#614734: marked as done (libc6.1-dev: #include <math.h> from gcc on a DEC Alpha does not declare function `round')
Your message dated Tue, 22 Feb 2011 23:28:42 -0600
with message-id <20110223052841.GA30485@elie>
and subject line Re: libc6.1-dev: #include <math.h> from gcc on a DEC Alpha does not declare function `round'
has caused the Debian Bug report #614734,
regarding libc6.1-dev: #include <math.h> from gcc on a DEC Alpha does not declare function `round'
to be marked as done.
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--
614734: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=614734
Debian Bug Tracking System
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--- Begin Message ---
Package: libc6.1-dev
Version: 2.7-18lenny7
Severity: normal
When compiling the file test.c containing:
#include <math.h>
double test(double x)
{
return round(x);
}
using gcc 4.2.4-6 on a DEC Alpha machine produces the following result:
test.c In function `test':
test.c:5: warning: incompatible implicit declaration of built-in
function `round'
Upon examining the output from the command (i.e., the file temp.tmp):
gcc -E -o temp.tmp test.c
There is no declaration of the `round' function yet, as far as I can
determine, such a declaration should be present because it is in
/usr/include/math.h via the include of /usr/include/bits/mathcalls.h.
If I put an explicit declaration for `round' in test.c, no warning is
reported.
-- System Information:
Debian Release: 5.0.8
APT prefers oldstable
APT policy: (500, 'oldstable')
Architecture: alpha
Kernel: Linux 2.6.26-2-alpha-generic
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages libc6.1-dev depends on:
ii libc6.1 2.7-18lenny7 GNU C Library: Shared libraries
ii linux-libc-dev 2.6.26-26lenny2 Linux support headers for userspac
Versions of packages libc6.1-dev recommends:
ii gcc [c-compiler] 4:4.2.4-5 The GNU C compiler
ii gcc-4.2 [c-compiler] 4.2.4-6 The GNU C compiler
ii gcc-4.3 [c-compiler] 4.3.2-1.1 The GNU C compiler
Versions of packages libc6.1-dev suggests:
ii glibc-doc 2.7-18lenny7 GNU C Library: Documentation
pn manpages-dev <none> (no description available)
-- no debconf information
--- End Message ---
--- Begin Message ---
Jonathan Nieder wrote:
> Wayne Rossberg wrote:
>> #include <math.h>
> [...]
>> test.c:5: warning: incompatible implicit declaration of built-in function `round'
>
> (That said, the warning does seem weird. I'm not sure what would
> cause it.)
Agh. I can't read. The warning is saying "the implicit declaration
int round(double d);
is incompatible with GCC's built-in definition
double round(double d);
". Which is true, so closing.
Thanks for reporting.
--- End Message ---
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