https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96937
--- Comment #7 from Will Cohen <wcohen at redhat dot com> --- Created attachment 51963 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51963&action=edit Reproducer showing duplicate formal parameters from kernel probe_rom.i Compiled with following to generate probe_rom.o with duplicate k formal parameters in the debuginfo: gcc -Wp,-MMD,arch/x86/kernel/.probe_roms.o.d -nostdinc -D__KERNEL__ -fmacro-pre fix-map=./= -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-a liasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 -mno-s se -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -fcf-protection=none -m64 -falign-jump s=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387 -mpreferred-stack-boundary=3 - mskip-rax-setup -mtune=generic -mno-red-zone -mcmodel=kernel -Wno-sign-compare - fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern -mindirect-branch- register -fno-jump-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wn o-format-truncation -Wno-format-overflow -Wno-address-of-packed-member -O2 -fno- allow-store-data-races -Wframe-larger-than=2048 -fstack-protector-strong "-Wimpl icit-fallthrough=5" -Wno-main -Wno-unused-but-set-variable -Wno-unused-const-var iable -fno-stack-clash-protection -pg -mrecord-mcount -mfentry -DCC_USING_FENTRY -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wno-stringop-truncation -Wno-zero-length-bounds -Wno-array-bounds -Wno-stringop-overflow -Wno-restrict - Wno-maybe-uninitialized -Wno-alloc-size-larger-than -fno-strict-overflow -fno-st ack-check -fconserve-stack -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -Wno-packed-not-aligned -g -DKBUILD_MODFILE='"arch/x8 6/kernel/probe_roms"' -DKBUILD_BASENAME='"probe_roms"' -DKBUILD_MODNAME='"probe_ roms"' -D__KBUILD_MODNAME=kmod_probe_roms -c -o probe_roms.o probe_roms.i
