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authorAntonio Borneo <borneo.antonio@gmail.com>2020-04-07 06:11:04 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-07 20:43:43 +0300
commit7b18496cbc9af07f5dfbb1ce56ea839344061b54 (patch)
treebba300b15ae83726bb84813bc8794d383dd99e68 /scripts/bpf_helpers_doc.py
parent342d3d2f136837cbe9aaee368dbea39865b9c0f4 (diff)
downloadlinux-7b18496cbc9af07f5dfbb1ce56ea839344061b54.tar.xz
checkpatch: fix multiple const * types
Commit 1574a29f8e76 ("checkpatch: allow multiple const * types") claims to support repetition of pattern "const *", but it actually allows only one extra instance. Check the following lines int a(char const * const x[]); int b(char const * const *x); int c(char const * const * const x[]); int d(char const * const * const *x); with command ./scripts/checkpatch.pl --show-types -f filename to find that only the first line passes the test, while a warning is triggered by the other 3 lines: WARNING:FUNCTION_ARGUMENTS: function definition argument 'char const * const' should also have an identifier name The reason is that the pattern match halts at the second asterisk in the line, thus the remaining text starting with asterisk fails to match a valid name for a variable. Fixed by replacing "?" (Match 1 or 0 times) with "{0,4}" (Match no more than 4 times) in the regular expression. Fix also the similar test for types in unusual order. Fixes: 1574a29f8e76 ("checkpatch: allow multiple const * types") Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Joe Perches <joe@perches.com> Link: http://lkml.kernel.org/r/20200122163852.124417-1-borneo.antonio@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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