This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
Re: debug/1621: Debugging with complex numbers
Here is an attempt to fix the documentation problem. Comments?
2002-12-12 Jim Wilson <wilson@redhat.com>
* doc/extend.texi (Complex Numbers): Update info on debug info.
Index: extend.texi
===================================================================
RCS file: /cvs/gcc/gcc/gcc/doc/extend.texi,v
retrieving revision 1.108
diff -p -r1.108 extend.texi
*** extend.texi 27 Nov 2002 06:32:13 -0000 1.108
--- extend.texi 12 Dec 2002 20:46:44 -0000
*************** provided as built-in functions by GCC@.
*** 1224,1239 ****
GCC can allocate complex automatic variables in a noncontiguous
fashion; it's even possible for the real part to be in a register while
! the imaginary part is on the stack (or vice-versa). None of the
! supported debugging info formats has a way to represent noncontiguous
! allocation like this, so GCC describes a noncontiguous complex
! variable as if it were two separate variables of noncomplex type.
If the variable's actual name is @code{foo}, the two fictitious
variables are named @code{foo$real} and @code{foo$imag}. You can
examine and set these two fictitious variables with your debugger.
-
- A future version of GDB will know how to recognize such pairs and treat
- them as a single variable with a complex type.
@node Hex Floats
@section Hex Floats
--- 1224,1236 ----
GCC can allocate complex automatic variables in a noncontiguous
fashion; it's even possible for the real part to be in a register while
! the imaginary part is on the stack (or vice-versa). Only the DWARF2
! debug info format can represent this, so use of DWARF2 is recommended.
! If you are using the stabs debug info format, GCC describes a noncontiguous
! complex variable as if it were two separate variables of noncomplex type.
If the variable's actual name is @code{foo}, the two fictitious
variables are named @code{foo$real} and @code{foo$imag}. You can
examine and set these two fictitious variables with your debugger.
@node Hex Floats
@section Hex Floats