https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107997
Bug ID: 107997
Summary: fd8dd6c03849691 probably uncovered an issue building
the Linux kernel
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: regression
Assignee: unassigned at gcc dot gnu.org
Reporter: jbg...@lug-owl.de
Target Milestone: ---
Hi!
Starting with commit fd8dd6c0384969170e594be34da278a072d5eb76, I see
Linux kernel build errors for the skiroot_defconfig:
[mk all 2022-12-05 19:50:10] powerpc64-linux-gcc
-Wp,-MMD,drivers/dma-buf/.dma-fence-array.o.d -nostdinc
-I./arch/powerpc/include -I./arch/powerpc/include/generated -I./include
-I./arch/po
werpc/include/uapi -I./arch/powerpc/include/generated/uapi -I./include/uapi
-I./include/generated/uapi -include ./include/linux/compiler-version.h -include
./include/linux/kconfig.h -include
./include/linux/compiler_types.h -D__KERNEL__ -I ./arch/powerpc
-DHAVE_AS_ATHIGH=1 -fmacro-prefix-map=./= -Wall -Wundef
-Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-comm
on -fshort-wchar -fno-PIE -Werror=implicit-function-declaration
-Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu11
-mlittle-endian -m64 -msoft-float -pipe -mtraceback=no
-mabi=elfv2 -mcmodel=medium -mno-pointers-to-nested-functions -mcpu=power8
-mtune=power10 -mno-prefixed -mno-pcrel -mno-altivec -mno-vsx -mno-mma
-fno-asynchronous-unwind-tables -mno-string
-Wa,-maltivec -Wa,-mpower4 -Wa,-many -mno-strict-align -mlittle-endian
-mstack-protector-guard=tls -mstack-protector-guard-reg=r13
-fno-delete-null-pointer-checks -Wno-frame-address -Wno-form
at-truncation -Wno-format-overflow -Wno-address-of-packed-member -Os
-fno-allow-store-data-races -Wframe-larger-than=2048 -fstack-protector-strong
-Wno-main -Wno-unused-but-set-variable -Wno-
unused-const-variable -Wno-dangling-pointer -fomit-frame-pointer
-ftrivial-auto-var-init=zero -fno-stack-clash-protection
-Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function
-type -Wno-stringop-truncation -Wno-stringop-overflow -Wno-restrict
-Wno-maybe-uninitialized -Wno-alloc-size-larger-than -Wimplicit-fallthrough=5
-fno-strict-overflow -fno-stack-check -fconse
rve-stack -Werror=date-time -Werror=incompatible-pointer-types
-Werror=designated-init -Wno-packed-not-aligned
-mstack-protector-guard-offset=2800
-DKBUILD_MODFILE='"drivers/dma-buf/dma-fe
nce-array"' -DKBUILD_BASENAME='"dma_fence_array"'
-DKBUILD_MODNAME='"dma_fence_array"' -D__KBUILD_MODNAME=kmod_dma_fence_array -c
-o drivers/dma-buf/dma-fence-array.o drivers/dma-buf/dma-fenc
e-array.c
[mk all 2022-12-05 19:50:10] drivers/dma-buf/dma-fence-array.c: In function
'dma_fence_array_create':
[mk all 2022-12-05 19:50:10] drivers/dma-buf/dma-fence-array.c:154:25: error:
control flow in the middle of basic block 12
[mk all 2022-12-05 19:50:10] 154 | struct dma_fence_array
*dma_fence_array_create(int num_fences,
[mk all 2022-12-05 19:50:10] |
^~~~~~~~~~~~~~~~~~~~~~
[mk all 2022-12-05 19:50:10] during GIMPLE pass: ivopts
[mk all 2022-12-05 19:50:10] drivers/dma-buf/dma-fence-array.c:154:25: internal
compiler error: verify_flow_info failed
[mk all 2022-12-05 19:50:10] 0x19ea876 internal_error(char const*, ...)
[mk all 2022-12-05 19:50:10] ???:0
[mk all 2022-12-05 19:50:10] 0x94b00e verify_flow_info()
[mk all 2022-12-05 19:50:10] ???:0
[mk all 2022-12-05 19:50:10] Please submit a full bug report, with preprocessed
source (by using -freport-bug).
[mk all 2022-12-05 19:50:10] Please include the complete backtrace with any bug
report.
[mk all 2022-12-05 19:50:10] See <https://gcc.gnu.org/bugs/> for instructions.
(Cf. https://gcc.gnu.org/pipermail/gcc-patches/2022-December/607874.html)
I'll add the preprocessed sources.
