[S] Change in coreboot[master]: lint/checkpatch.pl: Check for 0-length and 1-element arrays

[Elyes Haouas (Code Review)]

Elyes Haouas has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/76869?usp=email )

Change subject: lint/checkpatch.pl: Check for 0-length and 1-element arrays
......................................................................

lint/checkpatch.pl: Check for 0-length and 1-element arrays

Use C99 flexible arrays instead of deprecated fake flexible arrays.
This reduce difference with upstream.

Change-Id: I24016493280e22f34ae5cce49fe7c1f520270f9a
Signed-off-by: Elyes Haouas 
---
M util/lint/checkpatch.pl
1 file changed, 10 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/69/76869/1

diff --git a/util/lint/checkpatch.pl b/util/lint/checkpatch.pl
index c2efdbc..ab36f14 100755
--- a/util/lint/checkpatch.pl
+++ b/util/lint/checkpatch.pl
@@ -6820,6 +6820,16 @@
    		     "Using $1 should generally have parentheses around the comparison\n" . $herecurr);
    	}

+# check for array definition/declarations that should use flexible arrays instead
+		if ($sline =~ /^[+ ]\s*}(?:\s*__packed)?\s*;\s*$/ &&
+		    $prevline =~ /^+\s*(?:}(?:\s*__packed\s*)?|$Type)\s*$Ident\s*[\s*(0|1)\s*]\s*;\s*$/) {
+			if (ERROR("FLEXIBLE_ARRAY",
+				  "Use C99 flexible arrays - see https://docs.kernel.org/process/deprecated.html#zero-length-and-one-element-..." . $hereprev) &&
+			    $1 == '0' && $fix) {
+				$fixed[$fixlinenr - 1] =~ s/[\s*0\s*]/[]/;
+			}
+		}
+
 # whine mightly about in_atomic
    	if ($line =~ /\bin_atomic\s*(/) {
    		if ($realfile =~ m@^drivers/@) {