Changeset 851b842 in mainline

Timestamp:

2023-07-14T12:41:10Z (17 months ago)

Author:

Vojtech Horky <vojtech.horky@…>

Branches:

ticket/834-toolchain-update

Children:

b030416

Parents:

2b5628c

git-author:

Vojtech Horky <vojtech.horky@…> (2023-07-13 19:21:47)

git-committer:

Vojtech Horky <vojtech.horky@…> (2023-07-14 12:41:10)

Message:

Silence compiler when accessing low memory addresses

File:

• kernel/meson.build (modified) (1 diff)

kernel/meson.build

@@ -101 +101 @@
 kernel_c_args = arch_kernel_c_args + kernel_defs + [
         '-ffreestanding',
+        # When accessing specific memory addresses that are below normal page size,
+        # the compiler may assume that we actually dereferenced NULL pointer and
+        # warns us about that. But in kernel we often need to access these
+        # addresses directly hence we need to ignore these warnings.
+        #
+        # TODO: might make more sense to disable this selectively in specific
+        # files (or better yet, for specific lines).
+        '--param=min-pagesize=0',
         # TODO: remove this flag
         cc.get_supported_arguments([ '-Wno-cast-function-type' ]),