chromium-browser from 40 prerelease is crashing for me (on Gnome under X and Wayland, and under Hyprland).
With my standard set of plug-ins and pages open:
> chromium-browser
[0412/102708.587427:ERROR:check.cc(365)] Check failed: false. NOTREACHED log messages are omitted in official builds. Sorry!
[364318:364318:0412/102708.559539:ERROR:check.cc(365)] Check failed: false. NOTREACHED log messages are omitted in official builds. Sorry!
[364318:364318:0412/102709.204710:ERROR:policy_logger.cc(157)] :components/enterprise/browser/controller/chrome_browser_cloud_management_controller.cc(161) Cloud management controller initialization aborted as CBCM is not enabled. Please use the `--enable-chrome-browser-cloud-management` command line flag to enable it if you are not using the official Google Chrome build.
[364318:364318:0412/102713.344891:ERROR:check.cc(365)] Check failed: false. NOTREACHED log messages are omitted in official builds. Sorry!
[364392:364392:0412/102720.809604:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 1 times!
[364392:364392:0412/102722.572608:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 2 times!
[364392:364392:0412/102724.714188:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 3 times!
[0412/103107.321681:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[0412/103107.334242:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[0412/103107.338864:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[0412/103107.340250:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[0412/103107.435499:ERROR:check.cc(365)] Check failed: false. NOTREACHED log messages are omitted in official builds. Sorry!
[1] 364318 trace trap (core dumped) chromium-browser
The GetVSyncParametersIfAvailable() error occurs when the window changes focus, I think.
In guest mode, just idling:
> chromium-browser --guest
[0412/103708.627004:ERROR:check.cc(365)] Check failed: false. NOTREACHED log messages are omitted in official builds. Sorry!
[369882:369882:0412/103708.582956:ERROR:check.cc(365)] Check failed: false. NOTREACHED log messages are omitted in official builds. Sorry!
[369882:369882:0412/103708.831739:ERROR:policy_logger.cc(157)] :components/enterprise/browser/controller/chrome_browser_cloud_management_controller.cc(161) Cloud management controller initialization aborted as CBCM is not enabled. Please use the `--enable-chrome-browser-cloud-management` command line flag to enable it if you are not using the official Google Chrome build.
[369882:369882:0412/103711.858597:ERROR:check.cc(365)] Check failed: false. NOTREACHED log messages are omitted in official builds. Sorry!
[369929:369929:0412/103713.406984:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 1 times!
[0412/103939.744484:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[0412/103939.747291:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[0412/103939.751427:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[0412/103939.752799:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[0412/103939.853552:ERROR:check.cc(365)] Check failed: false. NOTREACHED log messages are omitted in official builds. Sorry!
[1] 369882 trace trap (core dumped) chromium-browser --guest
Initial research indicated this might be a Wayland issue, but it also occurs under X.
Possibly I don't have a dependency installed or at the correct version. chromium-browser was installed with dnf, though.
If the correct procedure is "wait for the actual 40 release" I'm happy to do that.