Source Locations

class gccjit::location

A gccjit::location encapsulates a source code location, so that you can (optionally) associate locations in your language with statements in the JIT-compiled code, allowing the debugger to single-step through your language.

gccjit::location instances are optional: you can always omit them from any C++ API entrypoint accepting one.

You can construct them using gccjit::context::new_location().

You need to enable GCC_JIT_BOOL_OPTION_DEBUGINFO on the gccjit::context for these locations to actually be usable by the debugger:

ctxt.set_bool_option (GCC_JIT_BOOL_OPTION_DEBUGINFO, 1);

gccjit::location gccjit::context::new_location(const char* filename, int line, int column)

Create a gccjit::location instance representing the given source location.

Faking it

If you don’t have source code for your internal representation, but need to debug, you can generate a C-like representation of the functions in your context using gccjit::context::dump_to_file():

ctxt.dump_to_file ("/tmp/something.c",
                   1 /* update_locations */);

This will dump C-like code to the given path. If the update_locations argument is true, this will also set up gccjit::location information throughout the context, pointing at the dump file as if it were a source file, giving you something you can step through in the debugger.