The branch main has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=2f6a842484675bb8fe9fafd40d90c06f13e02403
commit 2f6a842484675bb8fe9fafd40d90c06f13e02403 Author: John Baldwin <[email protected]> AuthorDate: 2022-02-14 19:48:47 +0000 Commit: John Baldwin <[email protected]> CommitDate: 2022-02-14 19:48:47 +0000 Disable -Wreturn-type on GCC. GCC is more pedantic than clang about warning when a function doesn't handle undefined enum values (see GCC bug 87950). Clang's warning gives a more pragmatic coverage and should find any real bugs, so disable the warning for GCC rather than adding __unreachable annotations to appease GCC. Reviewed by: imp, emaste Differential Revision: https://reviews.freebsd.org/D34147 --- share/mk/bsd.sys.mk | 4 ++++ sys/conf/kern.mk | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/share/mk/bsd.sys.mk b/share/mk/bsd.sys.mk index 694cc66c3f18..cf48411d3d4d 100644 --- a/share/mk/bsd.sys.mk +++ b/share/mk/bsd.sys.mk @@ -206,6 +206,10 @@ CWARNFLAGS+= -Wno-error=overflow .endif .endif +# GCC produces false positives for functions that switch on an +# enum (GCC bug 87950) +CWARNFLAGS+= -Wno-return-type + # GCC's own arm_neon.h triggers various warnings .if ${MACHINE_CPUARCH} == "aarch64" CWARNFLAGS+= -Wno-system-headers diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk index 4c497623bf7c..06a0c1272704 100644 --- a/sys/conf/kern.mk +++ b/sys/conf/kern.mk @@ -75,6 +75,10 @@ CWARNEXTRA+= -Wno-error=packed-not-aligned CWARNEXTRA+= -Wno-address-of-packed-member \ -Wno-error=alloca-larger-than= .endif + +# GCC produces false positives for functions that switch on an +# enum (GCC bug 87950) +CWARNFLAGS+= -Wno-return-type .endif # gcc # This warning is utter nonsense
