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Subject: [Bug
 gdb/12891]=?UTF-8?Q?=20implicit=20declaration=20of=20function=20=E2=80=98=5Fdoprnt=E2=80=99=20in=20libiberty?=/vfprintf.c
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http://sourceware.org/bugzilla/show_bug.cgi?id=12891

--- Comment #3 from Tom Tromey <tromey at redhat dot com> 2011-06-16 13:32:18 UTC ---
I think the problem is in autoconf.
libiberty uses AC_REPLACE_FUNCS and apparently this is not
-Werror safe.  From the log:


configure:5913: checking for vfprintf
configure:5913: i486-linux-gnu-gcc -o conftest -g -Werror     conftest.c  >&5
conftest.c:86:6: error: conflicting types for built-in function 'vfprintf'
[-Werror]
cc1: all warnings being treated as errors


You could report this to the autoconf maintainers.
Meanwhile, don't configure with -Werror.

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