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| author | H. Nikolaus Schaller <hns@goldelico.com> | 2021-07-08 10:57:10 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-15 12:59:54 +0200 |
| commit | b2386d801f2e70a851c057f1ce0f775018cbb540 (patch) | |
| tree | 3849102d2defbc461d5718502418ca1bb310e9ed /arch/mips/kernel/kprobes.c | |
| parent | 995abf774fadf2ed4bb823343c38827de9354a50 (diff) | |
mips: Fix non-POSIX regexp
[ Upstream commit 28bbbb9875a35975904e46f9b06fa689d051b290 ]
When cross compiling a MIPS kernel on a BSD based HOSTCC leads
to errors like
SYNC include/config/auto.conf.cmd - due to: .config
egrep: empty (sub)expression
UPD include/config/kernel.release
HOSTCC scripts/dtc/dtc.o - due to target missing
It turns out that egrep uses this egrep pattern:
(|MINOR_|PATCHLEVEL_)
This is not valid syntax or gives undefined results according
to POSIX 9.5.3 ERE Grammar
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html
It seems to be silently accepted by the Linux egrep implementation
while a BSD host complains.
Such patterns can be replaced by a transformation like
"(|p1|p2)" -> "(p1|p2)?"
Fixes: 48c35b2d245f ("[MIPS] There is no __GNUC_MAJOR__")
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/mips/kernel/kprobes.c')
0 files changed, 0 insertions, 0 deletions