------- Comment #18 from burnus at gcc dot gnu dot org 2010-09-09 19:33 -------
(In reply to comment #0)
> This is pretty widespread. I have attached one example
That's now mostly fixed - though one patch is pending. Now
gfortran -fdump-tree-original-lineno
generates mostly sensible line numbers.
For the given example, only for the DO loop the line numbers are a bit counter
intuitive, given the line numbers
14 do i = 1,10
15 array1(i) = i
16 end do
the dump of the internal representation (shown in a C-like syntax) is:
[debug.f90 : 14] i = 1;
[debug.f90 : 15] if ([debug.f90 : 15] i <= 10)
...
[debug.f90 : 15] array1[[debug.f90 : 15] (integer(kind=8)) i + -1] =
i;
L.1:;
[debug.f90 : 15] D.1577 = [debug.f90 : 15] i == 10;
[debug.f90 : 15] i = [debug.f90 : 15] i + 1;
[debug.f90 : 15] if (D.1577) goto L.2;
The "i = 1" is in the expected line - as is the "array1(i) = i" assignment, but
the loop increment and the exit conditions I would expect in line 14 and not in
line 15.
If no one else does, I will have a look after the last "input_location" patch
has been committed. I expect that there are more cases where the annotation is
slightly misplaced.
If one looks at GCC 4.4, one finds:
[debug.f90 : 14] i = 1;
[debug.f90 : 14] if (i <= 10)
[debug.f90 : 15] array1[(integer(kind=8)) i + -1] = i;
L.1:;
D.1550 = i == 10;
i = i + 1;
if (D.1550) goto L.2;
Thus, the first loop condition is in the proper line (14) while there is no
line number associated with the loop increment and the exit condition.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45186
