forked from Imagelibrary/binutils-gdb
2e08907d06
Currently it's not possible to call C++ methods from python.
Using this example:
```
class B
{
static int static_func ();
int arg0_func ();
int arg1_func (int arg1);
int arg2_func (int arg1, int arg2);
};
B *b_obj = new B;
```
Trying to call B::static_func gives this error:
```
(gdb) py b_obj = gdb.parse_and_eval('b_obj')
(gdb) py print(b_obj['static_func']())
Traceback (most recent call last):
File "<string>", line 1, in <module>
RuntimeError: Value is not callable (not TYPE_CODE_FUNC).
Error while executing Python code.
```
TYPE_CODE_METHOD was simply missing as a possible type in
valpy_call, now the same is possible:
```
(gdb) py b_obj = gdb.parse_and_eval('b_obj')
(gdb) py print(b_obj['static_func']())
1111
```
Note that it's necessary to explicitely add the this pointer
as the first argument in a call of non-static methods:
```
(gdb) py print(b_obj['arg0_func']())
Traceback (most recent call last):
File "<string>", line 1, in <module>
gdb.error: Too few arguments in function call.
Error while executing Python code.
(gdb) py print(b_obj['arg0_func'](b_obj))
198
```
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=13326
Approved-By: Tom Tromey <tom@tromey.com>
129 lines
1.9 KiB
C++
129 lines
1.9 KiB
C++
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2012-2024 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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class A {
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public:
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int operator+ (const int a1);
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public:
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int a;
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};
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int
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A::operator+ (const int a1)
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{
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return a + a1;
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}
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union U {
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int a;
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char c;
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};
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class B : public A {
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public:
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char a;
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static int static_func ();
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int arg0_func ();
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int arg1_func (int arg1);
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int arg2_func (int arg1, int arg2);
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};
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int B::static_func ()
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{
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return 1111;
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}
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int B::arg0_func ()
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{
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return A::a + a;
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}
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int B::arg1_func (int arg1)
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{
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return a * arg1;
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}
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int B::arg2_func (int arg1, int arg2)
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{
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return a * arg1 + arg2;
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}
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struct X
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{
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union { int x; char y; };
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union { int a; char b; };
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};
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union UU
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{
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union { int x; char y; };
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union { int a; char b; };
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};
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typedef B Btd;
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typedef int *int_ptr;
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typedef X Xtd;
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int
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func (const A &a)
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{
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int val = 10;
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int &int_ref = val;
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int_ptr ptr = &val;
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int_ptr &int_ptr_ref = ptr;
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B b;
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B b1;
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b.a = 'a';
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b.A::a = 10;
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B *b_obj = &b1;
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b_obj->a = 'b';
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b_obj->A::a = 100;
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B &b_ref = b1;
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Btd &b_td = b1;
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U u;
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u.a = 0x63636363;
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X x;
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x.x = 101;
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x.a = 102;
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UU uu;
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uu.x = 1000;
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X *x_ptr = &x;
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Xtd *xtd = &x;
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return 0; /* Break here. */
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}
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int
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main ()
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{
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A obj;
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obj.a = 5;
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return func (obj);
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}
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