Add -Wno-error=vla-cxx-extension to default flags

Fixes wolfssl, muduo

infra/base-images/base-clang/Dockerfile

@@ -60,8 +60,19 @@ ENV CCC "clang++"
 # warning, to allow compiling legacy code.
 # See https://releases.llvm.org/16.0.0/tools/clang/docs/ReleaseNotes.html#potentially-breaking-changes
 # Same for deprecated-declarations, int-conversion,
-# incompatible-function-pointer-types, enum-constexpr-conversion
+# incompatible-function-pointer-types, enum-constexpr-conversion,
+# vla-cxx-extension
 
-ENV CFLAGS "-O1 -fno-omit-frame-pointer -gline-tables-only -Wno-error=enum-constexpr-conversion -Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion -Wno-error=deprecated-declarations -Wno-error=implicit-function-declaration -Wno-error=implicit-int -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION"
+ENV CFLAGS -O1 \
+  -fno-omit-frame-pointer \
+  -gline-tables-only \
+  -Wno-error=enum-constexpr-conversion \
+  -Wno-error=incompatible-function-pointer-types \
+  -Wno-error=int-conversion \
+  -Wno-error=deprecated-declarations \
+  -Wno-error=implicit-function-declaration \
+  -Wno-error=implicit-int \
+  -Wno-error=vla-cxx-extension \
+  -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
 ENV CXXFLAGS_EXTRA "-stdlib=libc++"
 ENV CXXFLAGS "$CFLAGS $CXXFLAGS_EXTRA"