The following tests are failing on GTK since around r246107 webaudio/oscillator-custom.html webaudio/oscillator-sawtooth.html webaudio/oscillator-sine.html webaudio/oscillator-square.html webaudio/oscillator-triangle.html Interestingly though, these are audio tests (instead of text tests or image tests), and the test tool claims a huge mismatch: https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20(Tests)/r247512%20(10978)/results.html Sample #3622 < 9503 --- > 9504 Sample #7829 < 8243 --- > 8242 Sample #9686 < -6077 --- > -6076 Sample #11126 < -5946 --- > -5947 Sample #13515 < -62 --- > -63 Sample #15674 < 7894 [...] But after taking both the actual and expected files, adding them to different tracks on Audacity, inverting one and playing the result, I couldn't hear anything. They look equal, sound equal, and the histogram shows them as pretty equal too.
Created attachment 374317 [details] Comparison of the waves, seemingly no difference
Most likely these need port specific expectations.
Rebaselined in r268972