Holger Blasum <[EMAIL PROTECTED]> writes: > Hello guile-user,
Hi Holger, > in the "Guile Debugging Enhancements" tutorial > (http://download.gna.org/guile-debugging/guile-debugging.html) > there is encouragement to play with the source trap context > parameters. It's not important for the rest of my reply, but can you indicate exactly where in the doc you are referring to, so I can review whether this encouragement is worded as well as it could be? > What I want to look at are the source file names and > line numbers like eg in any gdb stepping session of a C program > say for matrix multiplication like: > > gdb -f a.out > (gdb) br main > Breakpoint 1 at 0x8048417: file matrix.c, line 11. > (gdb) run > Starting program: /home/blasum/a/comp/sema/sample/c/samples/a.out > /home/blasum/a/comp/sema/sample/c/samples/matrix.c:12 > (gdb) step > /home/blasum/a/comp/sema/sample/c/samples/matrix.c:13 > (gdb) step > /home/blasum/a/comp/sema/sample/c/samples/matrix.c:14 > (gdb) step > ... > > How can one access file name and line number of the source > properties in guile-debugging? In theory, the trace/source procedure exported from (ossau trace) should give you this. Here's an example which works up to a point for me: (use-modules (ice-9 debugger) (ossau ice-9-debugger-extensions) (ossau traps) (ossau trace)) (load "matrix.scm") (define (report-exp trap-context) (display "Expression: ") (display (trace/source trap-context)) (newline)) (install-trap (make <procedure-trap> #:procedure mkmatrix #:behaviour (list report-exp))) (do-main 4) which prints: Expression: matrix.scm:6:2 Note, though, that my dummy matrix.scm looks like this ... (define (mkmatrix) (let ((x 1)) 'this-is-a-matric)) (define (do-main n) (mkmatrix)) ... so 6:2 is the location of the call to mkmatrix, not of mkmatrix's own code. Is that what you wanted? I suspect not, because it doesn't map onto the GDB example that you gave. It sounds like what you might in fact want is a report of the evaluation of each subexpression within mkmatrix. In that case, the correct incantation would be something like this: (use-modules (ice-9 debugger) (ossau ice-9-debugger-extensions) (ossau traps) (ossau trace) (ossau steps)) (load "matrix.scm") (define (report-exp trap-context) (display "Expression: ") (display (trace/source trap-context)) (newline)) (define (report-subexps trap-context) (let ((step-trap (make <step-trap> #:file-name (frame-file-name (tc:frame trap-context)) #:behaviour report-exp))) (install-trap step-trap) (at-exit (tc:depth trap-context) (lambda (trap-context) (uninstall-trap step-trap))))) (install-trap (make <procedure-trap> #:procedure mkmatrix #:behaviour (list report-subexps))) For my dummy matrix.scm, this prints: Expression: matrix.scm:2:2 Expression: matrix.scm:3:20 Expression: matrix.scm:3:20 Does this help at all? (I suspect not completely, so please write more!) Neil _______________________________________________ Guile-user mailing list Guile-user@gnu.org http://lists.gnu.org/mailman/listinfo/guile-user
