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scripts/checkpatch.pl: Detect superfluous semicolon in C code

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Display error when a commit contains superfluous semicolon:

  $ git show 6663a0a3376 | scripts/checkpatch.pl -q -
  ERROR: superfluous trailing semicolon
  #276: FILE: block/io_uring.c:186:
  +                ret = -ENOSPC;;
  total: 1 errors, 1 warnings, 485 lines checked

Reported-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-Id: <20200218094402.26625-2-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Philippe Mathieu-Daudé 2020-02-18 10:43:50 +01:00 committed by Laurent Vivier
parent b09d51c909
commit ee0f3c09e0
1 changed files with 5 additions and 0 deletions
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5
scripts/checkpatch.pl
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@ -1830,6 +1830,11 @@ sub process {
ERROR("suspicious ; after while (0)\n" . $herecurr);
}
# Check superfluous trailing ';'
if ($line =~ /;;$/) {
ERROR("superfluous trailing semicolon\n" . $herecurr);
}
# Check relative indent for conditionals and blocks.
if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) {
my ($s, $c) = ($stat, $cond);