meson: turn on Wimplicit-fallthrough project wide

This will help avoid coding errors and allows for less warnings
from some static analysis tools.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5705>

diff --git a/meson.build b/meson.build
index 7d0373f..043047d 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -991,6 +991,7 @@ else
     '-Werror=empty-body',
     '-Werror=incompatible-pointer-types',
     '-Werror=int-conversion',
+    '-Wimplicit-fallthrough',
     '-Wno-missing-field-initializers',
     '-Wno-format-truncation',
     '-fno-math-errno',