Subject: Re: [PATCH 2/6] [GSOC] ref-filter: add %(raw) atom

From: Junio C Hamano <[email-masked]>
Date: Tue, 08 Jun 2021 14:07:28 +0900

"ZheNing Hu via GitGitGadget" <[email-masked]> writes:

>  static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, struct ref_array_item *b)
>  {
>  	struct atom_value *va, *vb;
> @@ -2389,10 +2452,30 @@ static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, stru
>  	} else if (s->sort_flags & REF_SORTING_VERSION) {
>  		cmp = versioncmp(va->s, vb->s);
>  	} else if (cmp_type == FIELD_STR) {
> -		int (*cmp_fn)(const char *, const char *);
> -		cmp_fn = s->sort_flags & REF_SORTING_ICASE
> -			? strcasecmp : strcmp;
> -		cmp = cmp_fn(va->s, vb->s);
> +		if (va->s_size == ATOM_VALUE_S_SIZE_INIT &&
> +		    vb->s_size == ATOM_VALUE_S_SIZE_INIT) {
> +			int (*cmp_fn)(const char *, const char *);
> +			cmp_fn = s->sort_flags & REF_SORTING_ICASE
> +				? strcasecmp : strcmp;
> +			cmp = cmp_fn(va->s, vb->s);
> +		} else {
> +			int (*cmp_fn)(const void *, const void *, size_t);
> +			cmp_fn = s->sort_flags & REF_SORTING_ICASE
> +				? memcasecmp : memcmp;
> +			size_t a_size = va->s_size == ATOM_VALUE_S_SIZE_INIT ?
> +					strlen(va->s) : va->s_size;
> +			size_t b_size = vb->s_size == ATOM_VALUE_S_SIZE_INIT ?
> +					strlen(vb->s) : vb->s_size;

This breaks -Wdecl-after-stmt.  A possible fix below.

diff --git a/ref-filter.c b/ref-filter.c
index 46aec291de..648f9cabff 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -2459,13 +2459,13 @@ static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, stru
 				? strcasecmp : strcmp;
 			cmp = cmp_fn(va->s, vb->s);
 		} else {
-			int (*cmp_fn)(const void *, const void *, size_t);
-			cmp_fn = s->sort_flags & REF_SORTING_ICASE
+			size_t a_size = va->s_size == ATOM_VALUE_S_SIZE_INIT
+					? strlen(va->s) : va->s_size;
+			size_t b_size = vb->s_size == ATOM_VALUE_S_SIZE_INIT
+					? strlen(vb->s) : vb->s_size;
+			int (*cmp_fn)(const void *, const void *, size_t) =
+				s->sort_flags & REF_SORTING_ICASE
 				? memcasecmp : memcmp;
-			size_t a_size = va->s_size == ATOM_VALUE_S_SIZE_INIT ?
-					strlen(va->s) : va->s_size;
-			size_t b_size = vb->s_size == ATOM_VALUE_S_SIZE_INIT ?
-					strlen(vb->s) : vb->s_size;
 
 			cmp = cmp_fn(va->s, vb->s, b_size > a_size ?
 				     a_size : b_size);