How to convert a gdb Value to a python numeral object while debugging C program -


i'm using python2.6's gdb module while debugging c program, , convert gdb.value instance python numeral object (variable) based off instance's '.type'.

e.g. turn c program's somestruct->some_float_val = 1./6; python gdb.value via sfv=gdb.parse_and_eval('somestruct->some_double_val'), turn double precision floating point python variable -- knowing str(sfv.type.strip_typedefs())=='double' , size 8b -- without converting through string using dbl=float(str(sfv)) or value.string() rather unpacking bytes using struct correct double value.

every link returned searches points https://sourceware.org/gdb/onlinedocs/gdb/values-from-inferior.html#values-from-inferior, can't see how convert value instance python variable cleanly, value wasn't in c memory represented gdb.value.address (so can't use inferior.read_memory()), how 1 turn python int without casting string values?

you can convert directly value using int or float:

(gdb) python print int(gdb.value(0)) 0 (gdb) python print float(gdb.value(0.0)) 0.0

there seems @ least 1 glitch in system, though, float(gdb.value(0)) not work.


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