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add asan build instructions

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vaxerski 2023-10-05 01:05:55 +01:00
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@ -41,3 +41,56 @@ First of all, **_READ THE [FAQ PAGE](../FAQ)_**
If your bug is not listed there, you can ask on the Discord server or open an
issue on GitHub.
# Building the Wayland stack with ASan
If requested, this is the deepest level of memory issue debugging possible.
Prepare yourself mentally, and then:
recommended to do in tty
clone wayland (`git clone --recursive https://gitlab.freedesktop.org/wayland/wayland`)
clone hyprland (`git clone --recursive https://github.com/hyprwm/Hyprland`)
edit your config to have a terminal that will launch:
```
bind = SUPER, Q, exec, LD_PRELOAD=/usr/lib/libasan.so kitty
```
(I put kitty, on `SUPER+Q` can be anything)
add this env to reset ASAN_OPTIONS for children:
```
env = ASAN_OPTIONS,
```
wayland:
```
meson ./build --prefix=/usr --buildtype=debug -Db_sanitize=address
sudo ninja -C build install
```
hyprland:
```
sudo make configdebug && make debug
```
Exit Hyprland to a TTY, cd to the cloned hyprland, and launch it:
```
ASAN_OPTIONS="detect_odr_violation=0,log_path=asan.log" ./build/Hyprland -c ~/.config/hypr/hyprland.conf
```
open your terminal
to open any app just add `LD_PRELOAD=/usr/lib/libasan.so` to the beginning of the cmd
Do whatever you used to do in order to crash the compositor.
Go to `~` or `cwd` and look for `asan.log.XXXXX` files. Zip all and attach to the issue.
once you are done, to revert your horribleness of no app opening without the ld preload just go to the cloned wayland and do
```
sudo rm -rf ./build
meson ./build --prefix=/usr --buildtype=release
sudo ninja -C build install
```