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c/1517: Erroneous warnings for nested functions with -Wmissing-declarations
- To: gcc-gnats at gcc dot gnu dot org
- Subject: c/1517: Erroneous warnings for nested functions with -Wmissing-declarations
- From: aj at suse dot de
- Date: Wed, 27 Dec 2000 21:17:13 +0100 (CET)
>Number: 1517
>Category: c
>Synopsis: synopsis of the problem (one line)>
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: change-request
>Submitter-Id: net
>Arrival-Date: Wed Dec 27 12:26:00 PST 2000
>Closed-Date:
>Last-Modified:
>Originator: Andreas Jaeger
>Release: 2.97 20001226 (experimental)
>Organization:
private
>Environment:
System: Linux gromit 2.4.0-test13-pre4 #56 Fri Dec 22 09:16:50 CET 2000 i686 unknown
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: /cvs/gcc/configure --prefix=/opt/gcc-2.97.test --enable-shared --enable-threads=posix --with-gnu-as --with-gnu-ld --disable-nls --with-system-zlib --enable-languages=c,objc,c++,f77
>Description:
A nested function with prototype definitions in C gives a
warning when using -Wmisssing-declarations. For static
functions I don't get a warning - and nested functions should
be treated the same way.
>How-To-Repeat:
Compile the following program with -Wmissing-declarations:
int
main (void)
{
int a;
int nested (int b)
{
return b + 2;
}
return (a + nested (a));
}
$ /opt/gcc-2.97.test/bin/gcc t.c -Wmissing-declarations
t.c: In function `main':
t.c:9: warning: no previous declaration for `nested'
>Fix:
Adding a prototype with "auto" works but I prefer to not
change the code, this should be treated the same way as static
functions.
>Release-Note:
>Audit-Trail:
>Unformatted: