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Subject[PATCH] bpf_doc: Fix build error with older python versions
Date
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>
Acked-by: Quentin Monnet <quentin@isovalent.com>
---
v2: Add more details to commit message
---
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
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