The upcoming GCC 9 release extends the -Wmissing-attributes warnings
(enabled by -Wall) to C and aliases: it warns when particular function
attributes are missing in the aliases but not in their target, e.g.:
void __cold f(void) {}
void __alias("f") g(void);
diagnoses:
warning: 'g' specifies less restrictive attribute than
its target 'f': 'cold' [-Wmissing-attributes]
These patch series clean these new warnings. Most of them are caused
by the module_init/exit macros.
The first patch has been in -next for a long time already, and an alternative
solution (only __cold) for module.h as well. However, since we decided
to go with the new __copy attribute, I will leave the series for a few days
again and send the PR for -rc7.
Link: https://lore.kernel.org/lkml/20190125104353.2791-1-labb...@redhat.com/
Miguel Ojeda (3):
lib/crc32.c: mark crc32_le_base/__crc32c_le_base aliases as __pure
Compiler Attributes: add support for __copy (gcc >= 9)
include/linux/module.h: copy __init/__exit attrs to
init/cleanup_module
include/linux/compiler_attributes.h | 14 ++++++++++++++
include/linux/module.h | 4 ++--
lib/crc32.c | 4 ++--
3 files changed, 18 insertions(+), 4 deletions(-)
--
2.17.1
