Re: False positive of "open brace '{' following function declarations" in checkpatch.pl

Re: False positive of "open brace '{' following function declarations" in checkpatch.pl

[Joe Perches]

On Thu, 2018-02-01 at 22:50 +0000, Song Liu wrote:
> Hi Andy and Joe, 
> 
> I am getting the following ERROR from check patch.pl:
> 
> ERROR: open brace '{' following function declarations go on the next line
> #235: FILE: tools/testing/selftests/bpf/test_stacktrace_map_build_id_offset.c:11:
> +struct bpf_map_def SEC("maps") control_map = {
> 
> 
> I guess it treats SEC("maps") as a function. But it is actually struct:
> 
> struct bpf_map_def SEC("maps") control_map = {
>         .type = BPF_MAP_TYPE_ARRAY,
>         .key_size = sizeof(__u32),
>         .value_size = sizeof(__u32),
>         .max_entries = 1,
> };

This seems to work better:
---
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 78e7a310af46..b6a0da9c7de7 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3919,8 +3919,10 @@ sub process {
 
 # function brace can't be on same line, except for #defines of do while,
 # or if closed on same line
-		if (($line=~/$Type\s*$Ident\(.*\).*\s*{/) and
-		    !($line=~/\#\s*define.*do\s\{/) and !($line=~/}/)) {
+		if ($^V && $^V ge 5.10.0 &&
+		    ($sline =~ /$Type\s*$Ident\s*$balanced_parens\s*{/) &&
+		    !($sline =~ /\#\s*define\b.*do\s*\{/) &&
+		    $sline !~ /}/) {
 			if (ERROR("OPEN_BRACE",
 				  "open brace '{' following function declarations go on the next line\n" . $herecurr) &&
 			    $fix) {

Re: False positive of "open brace '{' following function declarations" in checkpatch.pl

[Song Liu]

Thanks Joe! This patch eliminates the ERROR. 

Song

> On Feb 1, 2018, at 3:15 PM, Joe Perches <joe@perches.com> wrote:
> 
> On Thu, 2018-02-01 at 22:50 +0000, Song Liu wrote:
>> Hi Andy and Joe, 
>> 
>> I am getting the following ERROR from check patch.pl:
>> 
>> ERROR: open brace '{' following function declarations go on the next line
>> #235: FILE: tools/testing/selftests/bpf/test_stacktrace_map_build_id_offset.c:11:
>> +struct bpf_map_def SEC("maps") control_map = {
>> 
>> 
>> I guess it treats SEC("maps") as a function. But it is actually struct:
>> 
>> struct bpf_map_def SEC("maps") control_map = {
>>        .type = BPF_MAP_TYPE_ARRAY,
>>        .key_size = sizeof(__u32),
>>        .value_size = sizeof(__u32),
>>        .max_entries = 1,
>> };
> 
> This seems to work better:
> ---
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 78e7a310af46..b6a0da9c7de7 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3919,8 +3919,10 @@ sub process {
> 
> # function brace can't be on same line, except for #defines of do while,
> # or if closed on same line
> -		if (($line=~/$Type\s*$Ident\(.*\).*\s*{/) and
> -		    !($line=~/\#\s*define.*do\s\{/) and !($line=~/}/)) {
> +		if ($^V && $^V ge 5.10.0 &&
> +		    ($sline =~ /$Type\s*$Ident\s*$balanced_parens\s*{/) &&
> +		    !($sline =~ /\#\s*define\b.*do\s*\{/) &&
> +		    $sline !~ /}/) {
> 			if (ERROR("OPEN_BRACE",
> 				  "open brace '{' following function declarations go on the next line\n" . $herecurr) &&
> 			    $fix) {
>