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GDB: Python Exception <class 'TypeError'>: exceptions must derive from BaseException #15923
Description
Description
The following code:
<?php
$a = 1;
var_dump( $a );in /var/www/html/test.php. when run with GDB:
(gdb) set print pretty on
(gdb) break /usr/src/php/ext/standard/var.c:105
Breakpoint 1 at 0x4b6130: file /usr/src/php/ext/standard/var.c, line 105.
(gdb) run /var/www/html/test.php
Starting program: /usr/local/bin/php /var/www/html/test.php
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Breakpoint 1, php_var_dump (struc=0x7ffff54140f0, level=1) at /usr/src/php/ext/standard/var.c:113
113 if (level > 1) {
(gdb) p *struc
Where var.c:113 at the time was
Line 113 in c65e042
Resulted in this output:
$1 = Python Exception <class 'TypeError'>: exceptions must derive from BaseException
Python Exception <class 'TypeError'>: exceptions must derive from BaseException
{
value = {
lval = 1,
...
}
But I expected this output instead:
No errors
PHP Version
PHP 8.4-dev
Activity
cmb69 commentedon Sep 16, 2024
While I don't understand why PHP would throw a
TypeErrorhere, the error message is certainly not related to nice elephpants, but rather to nasty reptiles. ;)DanielEScherzer commentedon Sep 16, 2024
Its not a PHP type error, its a Python one - I boiled it down to a minimal reproduction case, but I was getting a lot of these (I just started using GDB for PHP)
I see this is tagged as needing feedback - what more can I provide?
cmb69 commentedon Sep 16, 2024
The question is: why do you get a Python error when running/debugging PHP code? I think there is something wrong with your setup.
DanielEScherzer commentedon Sep 16, 2024
I believe it is because the GDB stuff is written in python, see https://github.com/php/php-src/blob/1ce07b0957c9323e93c45d0a83c0133aa177a911/scripts/gdb/php_gdb.py
ndossche commentedon Sep 16, 2024
The error likely comes from this line:
php-src/scripts/gdb/php_gdb.py
Line 304 in 1ce07b0
You can't raise a string.
@DanielEScherzer Are you using a release build? That could explain why it can't find the symbol required.
DanielEScherzer commentedon Sep 16, 2024
I didn't think I was, but running
./configure --enable-debugand then re-make-ing and trying again fixed the issue. I guess then the attempted error makes sense, but the actual error (from raising a string) is problematic and should still be fixedndossche commentedon Sep 16, 2024
Yeah, I'll fix it. Looks like it's just on the master branch.
cmb69 commentedon Sep 16, 2024
Ah, I hadn't noticed this yet.
Fix phpGH-15923: GDB: Python Exception <class 'TypeError'>: exception…
Fix phpGH-15923: GDB: Python Exception <class 'TypeError'>: exception…