Date: Sun, 6 Jan 2002 05:00:07 -0800 (PST) From: Bruce Evans <bde@zeta.org.au> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/33590: imaxabs(3), imaxdiv(3) does not work with C++ linkage Message-ID: <200201061300.g06D07T08226@freefall.freebsd.org>
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The following reply was made to PR misc/33590; it has been noted by GNATS.
From: Bruce Evans <bde@zeta.org.au>
To: Vladimir Kushnir <vkushnir@Alfacom.net>, <mike@freebsd.org>
Cc: <freebsd-gnats-submit@freebsd.org>
Subject: Re: misc/33590: imaxabs(3), imaxdiv(3) does not work with C++ linkage
Date: Sun, 6 Jan 2002 23:55:14 +1100 (EST)
On Sat, 5 Jan 2002, Vladimir Kushnir wrote:
> >Description:
> Libc functions imaxabs(3), imaxdiv(3) used in C++ programs lead to "undefined
> reference" errors.
> >How-To-Repeat:
> Compile as C++ this code:
> /* test.cc */
> #include <inttypes.h>
>
> main() {
> intmax_t a = 1;
> intmax_t b;
> imaxdiv_t c;
> b = imaxabs(a);
> c = imaxdiv(a, b);
> }
>
> Output:
> ~> c++ -o itest test.cc
> /tmp/ccplyujk.o: In function `main':
> /tmp/ccplyujk.o(.text+0x21): undefined reference to `imaxabs(long long)'
> /tmp/ccplyujk.o(.text+0x4e): undefined reference to `imaxdiv(long long, long long)'
>
>
> >Fix:
%%%
Index: inttypes.h
===================================================================
RCS file: /home/ncvs/src/include/inttypes.h,v
retrieving revision 1.2
diff -u -2 -r1.2 inttypes.h
--- inttypes.h 15 Nov 2001 02:05:03 -0000 1.2
+++ inttypes.h 6 Jan 2002 12:51:47 -0000
@@ -43,4 +43,5 @@
} imaxdiv_t;
+__BEGIN_DECLS
intmax_t imaxabs(intmax_t) __pure2;
imaxdiv_t imaxdiv(intmax_t, intmax_t) __pure2;
@@ -51,4 +52,5 @@
intmax_t wcstoimax(const wchar_t *, wchar_t **, int);
uintmax_t wcstoumax(const wchar_t *, wchar_t **, int);
+__END_DECLS
#endif /* !_INTTYPES_H_ */
%%%
Bruce
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