Using -Oline -j 72 W=1 redirect to /tmp/tmp.C1hLlhuiuc and /tmp/tmp.5yCknEcaAy
LLVM=1 cc=clang
clang version 18.1.1 (Fedora 18.1.1-1.fc40)
Tree base:
ccf23c916ca3 ("tools: ynl: make the attr and msg helpers more C++ friendly")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-1/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-1/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/openvswitch/vport-internal_dev.o
  LD [M]  net/openvswitch/openvswitch.o
  CC [M]  drivers/net/ethernet/smsc/smc91x.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2431)
  CC [M]  drivers/net/ethernet/smsc/smc91x.mod.o
  LD [M]  drivers/net/ethernet/smsc/smc91x.ko
  CC [M]  net/openvswitch/openvswitch.mod.o
  LD [M]  net/openvswitch/openvswitch.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-1/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-1/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/smsc/smc91x.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2431)
  CC [M]  drivers/net/ethernet/smsc/smc91x.mod.o
  LD [M]  drivers/net/ethernet/smsc/smc91x.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-1/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-1/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/smsc/smc91x.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2431)
  CC [M]  drivers/net/ethernet/smsc/smc91x.mod.o
  LD [M]  drivers/net/ethernet/smsc/smc91x.ko