[Bug debug/13841] New: missing debug info for _Complex function arguments

["bob dot wilson at acm dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Today (23 Jan 2004) I changed the Xtensa port to define SPLIT_COMPLEX_ARGS so
that _Complex function arguments are split into separate real and imaginary
parts.  After that change, I noticed that I couldn't see any _Complex arguments
from GDB.  The following input will demonstrate the problem:

_Complex int cmplx (_Complex int arg) { return arg; }

int main (void) {
  _Complex int c = (1,2);
  c = cmplx(c);
  return 0;
}

With the default of DWARF2 for this target, the "formal parameter" TAG for "arg"
is produced but it has no AT_location entry.  If I use "-gstabs", there is no
".stabs" entry at all for "arg".

I'm not aware of anything specific to the Xtensa port that would cause this, so
the same problem is likely to occur with other ports that define
SPLIT_COMPLEX_ARGS (currently alpha and rs6000/AIX).

-- 
           Summary: missing debug info for _Complex function arguments
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: debug
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bob dot wilson at acm dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: xtensa-unknown-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13841