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Details

Type: Bug
Resolution: Out of scope
Priority: P3: Somewhat important
Fix Version/s: None
Affects Version/s: Qt Creator 4.14.0
Component/s: Debugger
Labels:
- qtcreator-bug-snippets

Platform/s:

Linux/Other display system

Description

I am trying to set up Qt Creator's pretty printers with GDB (Ubuntu 9.2-0ubuntu1~20.04).

I am not getting any errors on load with gdb.
info pretty-printer does not list any Qt types, but it does list other types registered
Expectedly, none of the types are pretty printed by gdb

With a following .gdbinit:

set python print-stack full
python import sys
python from pathlib import Path
python sys.path.insert(1, '/root/.gdb')
python from gdbbridge import *

, and a following sample code:

#include <QApplication>
#include <QString>

int main(int argc, char *argv[])
{
QString ss = "Hello";
QApplication app(argc, argv);
app.setObjectName(ss);
}

, I am getting the following results in gdb console:

root@debug:~# gdb -q -ex "break 8" -ex r ./a.out
Reading symbols from ./a.out...
Breakpoint 1 at 0xd10: file test.cpp, line 8.
Starting program: /root/a.out
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
[New Thread 0xfffff394b190 (LWP 19684)]
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'

Thread 1 "a.out" hit Breakpoint 1, main (argc=1, argv=0xfffffffff708) at test.cpp:8
8	app.setObjectName(ss);
(gdb) pp ss
ss =
   childtype="QChar",addrbase="0xaaaaaaad6238",addrstep="0x2",arrayencoding="uint:2",arraydata="480065006C006C006F00",<QString> = {"{...}"}

Drill down:
    pp ss ss

(gdb) pp app
app =
   [
      [parent] = <QObject*> = {"0x0"}
      [children] = <QList<QObject *>> = {"3"}
      [extra] = "{...}"
      [properties] = "{...}"
      [methods] = "6"
      [d] = <QObjectPrivate> = {"{...}"}
   ],<QApplication> = {"{...}"}

Drill down:
    pp app app.[extra]
    pp app app.[properties]
    pp app app
    pp app app.[d]

(gdb)

I also tested the pretty printers from master branch, to same result. I will much appreciate any help in investigating this further, I run out of the ideas at this point.