git: ecefb5d33ceb - stable/13 - sys: Disable -Walloc-size-larger-than for GCC 9+

The branch stable/13 has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=ecefb5d33cebb599ffcc8f6ae29354eb6e798424

commit ecefb5d33cebb599ffcc8f6ae29354eb6e798424
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2023-11-15 02:37:25 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2024-11-30 19:07:56 +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
    
    (cherry picked from commit ede077bf2a259c23923d1ab1231dc8c4577e6672)
---
 sys/conf/kern.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk
index 7a2cc4bfa7ff..5e79dd2af66a 100644
--- a/sys/conf/kern.mk
+++ b/sys/conf/kern.mk
@@ -88,6 +88,7 @@ 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				\