RE: gdb and Fortran90 arrays

Daniel Berlin
2005-07-09T18:18:49Z

On Fri, 2005-07-08 at 01:02 +0800, Wu Zhou wrote:
> Hi Parker,
>
> I had a fast look at you dwarf output. It doesn't conform to the DWARF
> standard, (which is the most commonly used debugging standard in the Linux
> world.) especially in the debuginfo on the array "guess" and "z". So it
> might better to post your question to g95 mail-list for a solution.
> However I will take some more time to see why GDB didn't think your code
> are written in fortran. Maybe it is related the following text:
>
> <0>: Abbrev Number: 1 (DW_TAG_compile_unit)
> DW_AT_stmt_list : 0
> DW_AT_high_pc : 0x80494ec
> DW_AT_low_pc : 0x8049440
> DW_AT_producer : G95 Fortran 95 4.0.0 20050129 (experimental) (g95!)
>
> I need to see how GDB guess the language of the binary.

It should use DW_AT_language.

If you look, his binary claims it is ANSI C.

<0>: Abbrev Number: 1 (DW_TAG_compile_unit)
> DW_AT_stmt_list : 0
> DW_AT_high_pc : 0x80494ec
> DW_AT_low_pc : 0x8049440
> DW_AT_producer : G95 Fortran 95 4.0.0 20050129 (experimental)
(g95!)
> Apr 4 2005
> DW_AT_language : 1 (ANSI C)
> DW_AT_name : gdbDriver.f90
> DW_AT_comp_dir : /home/surfer/downloads/2ndharm-2.0/src