Date: Wed, 15 Nov 2023 02:37:52 GMT From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: ede077bf2a25 - main - sys: Disable -Walloc-size-larger-than for GCC 9+ Message-ID: <202311150237.3AF2bqxF010105@gitrepo.freebsd.org>
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The branch main has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=ede077bf2a259c23923d1ab1231dc8c4577e6672 commit ede077bf2a259c23923d1ab1231dc8c4577e6672 Author: John Baldwin <jhb@FreeBSD.org> AuthorDate: 2023-11-15 02:37:25 +0000 Commit: John Baldwin <jhb@FreeBSD.org> CommitDate: 2023-11-15 02:37:25 +0000 sys: Disable -Walloc-size-larger-than for GCC 9+ By default this warns about sizes larger than PTRDIFF_MAX passed to malloc (rather than SIZE_MAX). This doesn't trigger deterministically, but it does trigger for kmalloc() of struct_size() in iwlwifi's iwl_configure_rxq even when struct_size() is changed to use PTRDIFF_MAX. NB: struct_size() in Linux caps the size at SIZE_MAX, not PTRDIFF_MAX via size_mul(). Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D42587 --- sys/conf/kern.mk | 1 + 1 file changed, 1 insertion(+) diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk index 72b7387d3959..08779b4da193 100644 --- a/sys/conf/kern.mk +++ b/sys/conf/kern.mk @@ -76,6 +76,7 @@ CWARNEXTRA+= -Wno-error=packed-not-aligned .endif .if ${COMPILER_VERSION} >= 90100 CWARNEXTRA+= -Wno-address-of-packed-member \ + -Wno-alloc-size-larger-than \ -Wno-error=alloca-larger-than= .if ${COMPILER_VERSION} >= 120100 CWARNEXTRA+= -Wno-error=nonnull \
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