[Bug c/50720] New: "deprecated" doesn't work as expected for functions returning pointer

[bhelgaas at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50720

             Bug #: 50720
           Summary: "deprecated" doesn't work as expected for functions
                    returning pointer
    Classification: Unclassified
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: bhelg...@google.com


I expected warnings on each of the four function calls below, but I only got
three warnings (the one for "old_fn1a" is missing).


$ cat x.c
struct foo { int bar; };

struct foo * __attribute__ ((deprecated)) old_fn1a();
struct foo * old_fn1b() __attribute__ ((deprecated));

int __attribute__ ((deprecated)) old_fn2a();
int old_fn2b() __attribute__ ((deprecated));

void test(void)
{
        old_fn1a();
        old_fn1b();
        old_fn2a();
        old_fn2b();
}


$ cc -c x.c
x.c: In function ‘test’:
x.c:12: warning: ‘old_fn1b’ is deprecated (declared at x.c:4)
x.c:13: warning: ‘old_fn2a’ is deprecated (declared at x.c:6)
x.c:14: warning: ‘old_fn2b’ is deprecated (declared at x.c:7)



$ cc -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.3-4ubuntu5'
--with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--enable-multiarch --enable-linker-build-id --with-system-zlib
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc
--disable-werror --with-arch-32=i486 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)