Permalink
Reply
Hello,
I'm trying to use gdb to debug D binaries, but I'm having trouble accessing the methods of a struct or class. It seems that gdb doesn't see them.
Given the following simple example
// test.d
struct S
{
int x;
void myPrint() { writefln("x is %s\n", x); }
}
void main(string[] args)
{
S s;
}
Compile the source file with debug simbols (dmd -g test.d -of=test) and open the binary with gdb (gdb test) and run the following
> break _Dmain # break at D entry point
> run
> ptype s
type = struct test.S {
int x;
}
> print s.myPrint()
Structure has no component named myPrint.
As you can see, when I try to access the myPrint() method I get the error
"Structure has no component named myPrint."
Looking up gdb's bugzilla, I've found this issue [0] that basically says that gdb treats D as C code (and that would explain why it doesn't look for function definitions inside D structs).
A simple "fix"/"hack" to this problem is to define a helper function that will take my symbol as a parameter and internally call the function that I need, like below:
extern (C) void helper(ref S s) { s.myPrint(); }
While this does the job for this trivial example, it doesn't scale for a real project.
Are there any solutions to this problem?
Looking forward to your answers,
Edi
