From: Peter Maydell <peter.mayd...@linaro.org> QEMU has historically used variable length arrays only very rarely. Variable length arrays are a potential security issue where an on-stack dynamic allocation isn't correctly size-checked, especially when the size comes from the guest. (An example problem of this kind from the past is CVE-2021-3527). Forbidding them entirely is a defensive measure against further bugs of this kind.
Enable -Wvla to prevent any new uses from sneaking into the codebase. Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> Message-ID: <20240125173211.1786196-3-peter.mayd...@linaro.org> [thuth: rebased to current master branch] Signed-off-by: Thomas Huth <th...@redhat.com> --- meson.build | 1 + 1 file changed, 1 insertion(+) diff --git a/meson.build b/meson.build index c1dc83e4c0..0ef1654e86 100644 --- a/meson.build +++ b/meson.build @@ -592,6 +592,7 @@ warn_flags = [ '-Wstrict-prototypes', '-Wtype-limits', '-Wundef', + '-Wvla', '-Wwrite-strings', # Then disable some undesirable warnings -- 2.43.2
