[Bug target/58964] New: [4.9 Regression] Bogus message: error: -mpreferred-stack-boundary=0 is not between 2 and 12

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58964

            Bug ID: 58964
           Summary: [4.9 Regression] Bogus message: error:
                    -mpreferred-stack-boundary=0 is not between 2 and 12
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: d.g.gorbachev at gmail dot com
              Host: i686-pc-linux-gnu
            Target: i686-pc-linux-gnu
             Build: i686-pc-linux-gnu

GCC 4.9.0 20131027 (experimental) /rev. 204109/

$ cat > 1.c
__attribute__((target("cld")))
void
foo(void)
{
}
^D
$ gcc -mpreferred-stack-boundary=3 1.c
1.c:4:1: error: -mpreferred-stack-boundary=0 is not between 2 and 12

GCC 20130929 /rev. 203020/ - works.