[photran] Problems with gdb on a Mac

[Jeff Steward <jeffsteward@xxxxxxxxx>]

Photran Mailing List,

I am having problems debugging my code in Photran using gdb.

I have some nasty old code that has implicit double precision.  When I
try to debug it, I see several errors in red in the console:

A syntax error in expression, near `kind=4)'.
A syntax error in expression, near `kind=4) [500]'.
A syntax error in expression, near `kind=8) [200]'.
A syntax error in expression, near `kind=8) [300]'.
A syntax error in expression, near `kind=8)'.
A syntax error in expression, near `kind=8) [21][21][81]'.
A syntax error in expression, near `kind=8) [21][21]'.
A syntax error in expression, near `kind=8) [80]'.
A syntax error in expression, near `kind=8) [21][81]'.
A syntax error in expression, near `kind=4)'.
A syntax error in expression, near `kind=8) [19323]'.
A syntax error in expression, near `kind=4) [3]'.
A syntax error in expression, near `kind=4) [7]'.
A syntax error in expression, near `kind=4) [2]'.
A syntax error in expression, near `kind=8) [8]'.
A syntax error in expression, near `kind=4) [2]'.
A syntax error in expression, near `kind=4)'.
A syntax error in expression, near `kind=8) [715219]'.

In the Variables tab of the debugging view, I can see a lot of my
variables; however, most of them (but not all!) are missing values,
and when I click on the ones missing a value, in the box below the
variable list I see the message:

Target request failed: Cannot access memory at address 0x0.

Here is my makefile:

all:
	gfortran -W -g3 -c *.f90
	gfortran -g3 *.o -o swe.exe
clean:
	rm -f swe.exe *.o

I am using gfortran 4.6.0 20101106 (experimental) installed by
macports.  I have tested the gdb that comes with XCode GNU gdb
6.3.50-20050815 (Apple version gdb-1461.2) as well as one installed
with macports GNU gdb (GDB) 7.2.  Both versions of gdb give the same
problem in Photran.

However, I can debug with gdb from the terminal (i.e. without photran)
with no issues.

Any ideas?

Best wishes,

Jeff