From 5fbea42387eba1c7517fcad79099df706def7054 Mon Sep 17 00:00:00 2001

From: Michal Suchanek <msuchanek@suse.de>

Date: Mon, 9 Jan 2023 12:34:42 +0100

Subject: [PATCH] bpf_doc: Fix build error with older python versions

References: TypeError: '_sre.SRE_Match' object is not subscriptable

Patch-mainline: queued

Git-commit: 5fbea42387eba1c7517fcad79099df706def7054

Git-repo: https://git.kernel.org/bpf/bpf-next

The ability to subscript match result as an array is only available

since python 3.6. Existing code in bpf_doc uses the older group()

interface but commit 8a76145a2ec2 adds code using the new interface.

Use the old interface consistently to avoid build error on older

distributions like the below:

+ make -j48 -s -C /dev/shm/kbuild/linux.33946/current ARCH=powerpc HOSTCC=gcc CROSS_COMPILE=powerpc64-suse-linux- clean

TypeError: '_sre.SRE_Match' object is not subscriptable

Fixes: 8a76145a2ec2 ("bpf: explicitly define BPF_FUNC_xxx integer values")

Signed-off-by: Michal Suchanek <msuchanek@suse.de>

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

Acked-by: Quentin Monnet <quentin@isovalent.com>

Link: https://lore.kernel.org/bpf/20230109113442.20946-1-msuchanek@suse.de

Acked-by: Michal Suchanek <msuchanek@suse.de>

---

 scripts/bpf_doc.py | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/bpf_doc.py b/scripts/bpf_doc.py

index e8d90829f23e..38d51e05c7a2 100755

--- a/scripts/bpf_doc.py

+++ b/scripts/bpf_doc.py

@@ -271,7 +271,7 @@ class HeaderParser(object):

             if capture:

                 fn_defines_str += self.line

                 helper_name = capture.expand(r'bpf_\1')

-                self.helper_enum_vals[helper_name] = int(capture[2])

+                self.helper_enum_vals[helper_name] = int(capture.group(2))

                 self.helper_enum_pos[helper_name] = i

                 i += 1

             else:

-- 

2.35.3