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nss: Fix warnings generated by getcwd

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getcwd() conforms to POSIX.1-2001 which leaves the behaviour when the
buf argument is NULL, undefined. This makes gcc 10+ throw the following
warning:

argument 1 is null but the corresponding size argument 2 value is 4096

Initially, this was fixed by disabling NSS_ENABLE_WERROR. This patch
re-enables NSS_ENABLE_WERROR (by leaving it to its default value) and
takes advantage of the existing functionality in nss that wraps the
getcwd call into a function making sure that the buf argument is always
properly allocated.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
This commit is contained in:
Andrei Gherzan 2021-02-23 22:17:55 +00:00 committed by Armin Kuster
parent f12e852c56
commit 453bd7845f
1 changed files with 5 additions and 1 deletions
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6
meta-oe/recipes-support/nss/nss_3.51.1.bb
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@ -62,7 +62,6 @@ do_configure_prepend_libc-musl () {
do_compile_prepend_class-native() {
export NSPR_INCLUDE_DIR=${STAGING_INCDIR_NATIVE}/nspr
export NSPR_LIB_DIR=${STAGING_LIBDIR_NATIVE}
export NSS_ENABLE_WERROR=0
}
do_compile_prepend_class-nativesdk() {
@ -81,6 +80,11 @@ do_compile() {
export NATIVE_CC="${BUILD_CC}"
# Additional defines needed on Centos 7
export NATIVE_FLAGS="${BUILD_CFLAGS} -DLINUX -Dlinux"
# POSIX.1-2001 states that the behaviour of getcwd() when passing a null
# pointer as the buf argument, is unspecified.
export NATIVE_FLAGS="${NATIVE_FLAGS} -DGETCWD_CANT_MALLOC"
export BUILD_OPT=1
export FREEBL_NO_DEPEND=1