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rtld: Silence a false positive GCC 6.4.0 warning

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The function reloc_non_plt has complicated variable lifetimes that GCC 6.4.0
(the version currently used by amd64-xtoolchain-gcc) misunderstands and
produces an erroneous warning about.  Silence it to allow the -Werror build
to proceed.

Reviewed by:	emaste
This commit is contained in:
Conrad Meyer 2018-11-23 18:23:29 +00:00
parent bac111cc74
commit 66a87f8cfd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=340843
1 changed files with 4 additions and 0 deletions
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4
libexec/rtld-elf/Makefile
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@ -102,6 +102,10 @@ ${PROG_FULL}: ${VERSION_MAP}
# GCC warns about redeclarations even though they have __exported
# and are therefore not identical to the ones from the system headers.
CFLAGS+= -Wno-redundant-decls
# GCC (6.4.0) doesn't grok the complicated lifetimes in reloc_non_plt():
.if ${MACHINE_CPUARCH} == "amd64"
CFLAGS.reloc.c+=-Wno-maybe-uninitialized
.endif
.if ${COMPILER_VERSION} < 40300
# Silence -Wshadow false positives in ancient GCC
CFLAGS+= -Wno-shadow