[Bug c/28120] New: The option -f[no-]inline-functions is invalid with -O2

[tanaka at personal-media dot co dot jp]

Compiling C source code(test.c) by

gcc -c --save-temps -O2 -fno-inline-functions test.c -o test.o
gcc -c --save-temps -O2 -finline-functions test.c -o test.o

Both output, function(small()) is integrated into main().

If the option -fno-unit-at-a-time is set additionally, the option
-f[no-]inline-functions
becomes effective.

Is it correct?

======== test.c =========
static int small(int a)
{
        return 2*a;
}

int main()
{
        return small(2);
}

======== gcc -v =========
Target: i686-pc-linux-gnu
Configured with: ../gcc-4.1.1/configure --prefix=/work/te/tool/Linux-i686
--enable-languages=c,c++
Thread model: posix
gcc version 4.1.1
----------------
Same result is produced by gcc-3.4.5.


-- 
           Summary: The option -f[no-]inline-functions is invalid with -O2
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tanaka at personal-media dot co dot jp
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28120