Hi James! On Wed, Jan 29, 2025 at 01:43:31AM +0000, James Addison wrote: > Dear Maintainer, Dmitry, > > This is conjecture, but I wondered whether an adjustment to the meson linkage > options for libgallium_dri[1] around the same time (not contained in the same > commit, but chronologically nearby) could be relevant. In particular, libdri > moved into link_whole, although libswdri did not.
I tried moving libswdri to link_whole as well, but it did not change anything unfortunately. And reverting 212d57f7e6701a4f307c2c049a0e3eccfce58965 is not possible, because there are conflicts in all three files. In other news, I tried to use different linkers and linker options. With all linkers, it crashes, but in a bit different ways: - bfd (default): jump happens to stderr(). - gold: jump happens to some incorrect place in libgallium-24.3.4.so: https://paste.debian.net/1347044/ https://paste.debian.net/1347045/ - lld: jump happens to 0x0. - bfd with -Wl,-z,now: *** stack smashing detected *** but in the same location, when attempting to do driSwapBuffers(pdraw->dri_drawable). Also I tried a different compiler (clang), and did not notice any difference compared to gcc. In case someone else wants to take a look at this, here is how I test it: 1. Clone upstream repo and enter the directory: $ git clone --depth 1 https://gitlab.freedesktop.org/mesa/mesa.git -b 24.3 $ cd mesa 2. Configure mesa (see [1] on details how to pass a different compiler or options): $ meson setup build 3. Build mesa (pass -v to see full command lines): $ ninja -C build 4. Install mesa locally: $ meson install -C build --destdir=~/mesa-install 5. Get qtlocation package source: $ cd ~ $ dget -ux https://deb.debian.org/debian/pool/main/q/qtlocation-opensource-src/qtlocation-opensource-src_5.15.15+dfsg-3.dsc 6. Run the build until it fails: $ cd qtlocation-opensource-src-5.15.15+dfsg $ dpkg-buildpackage -jauto 7. Enter the test directory: $ cd tests/auto/declarative_ui 8. Set LD_LIBRARY_PATH environment variable: $ export LD_LIBRARY_PATH=~/qtlocation-opensource-src-5.15.15+dfsg/lib:~/mesa-install/usr/local/lib/powerpc64le-linux-gnu 9. Enter Xvfb environment: $ xvfb-run -a -s "-screen 0 1024x768x24 +extension RANDR +extension RENDER +extension GLX" bash 10. Run the test: $ ./tst_declarative_ui -import ~/qtlocation-opensource-src-5.15.15+dfsg/qml Steps 5 and 6 can be done once, no need to repeat them between tests. [1]: https://docs.mesa3d.org/meson.html#compiler-options -- Dmitry Shachnev
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