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From: "René Scharfe" <l.s.r@web.de>
To: Git List <git@vger.kernel.org>
Cc: Junio C Hamano <gitster@pobox.com>
Subject: [PATCH 3/3] remove unnecessary check before QSORT
Date: Thu, 29 Sep 2016 17:29:29 +0200	[thread overview]
Message-ID: <51040709-64da-37bf-b5b4-0228e2be51b4@web.de> (raw)
In-Reply-To: <67bddc37-4ee2-fef0-c852-e32645421e4c@web.de>

Add a semantic patch for removing checks similar to the one that QSORT
already does internally and apply it to the code base.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
---
 builtin/fmt-merge-msg.c        | 10 ++++------
 contrib/coccinelle/qsort.cocci | 18 ++++++++++++++++++
 sh-i18n--envsubst.c            |  3 +--
 3 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/builtin/fmt-merge-msg.c b/builtin/fmt-merge-msg.c
index 4976967..efab62f 100644
--- a/builtin/fmt-merge-msg.c
+++ b/builtin/fmt-merge-msg.c
@@ -314,12 +314,10 @@ static void add_people_info(struct strbuf *out,
 			    struct string_list *authors,
 			    struct string_list *committers)
 {
-	if (authors->nr)
-		QSORT(authors->items, authors->nr,
-		      cmp_string_list_util_as_integral);
-	if (committers->nr)
-		QSORT(committers->items, committers->nr,
-		      cmp_string_list_util_as_integral);
+	QSORT(authors->items, authors->nr,
+	      cmp_string_list_util_as_integral);
+	QSORT(committers->items, committers->nr,
+	      cmp_string_list_util_as_integral);
 
 	credit_people(out, authors, 'a');
 	credit_people(out, committers, 'c');
diff --git a/contrib/coccinelle/qsort.cocci b/contrib/coccinelle/qsort.cocci
index a094e7c..22b93a9 100644
--- a/contrib/coccinelle/qsort.cocci
+++ b/contrib/coccinelle/qsort.cocci
@@ -17,3 +17,21 @@ expression nmemb, compar;
 @@
 - qsort(base, nmemb, sizeof(T), compar);
 + QSORT(base, nmemb, compar);
+
+@@
+expression base, nmemb, compar;
+@@
+- if (nmemb)
+    QSORT(base, nmemb, compar);
+
+@@
+expression base, nmemb, compar;
+@@
+- if (nmemb > 0)
+    QSORT(base, nmemb, compar);
+
+@@
+expression base, nmemb, compar;
+@@
+- if (nmemb > 1)
+    QSORT(base, nmemb, compar);
diff --git a/sh-i18n--envsubst.c b/sh-i18n--envsubst.c
index 3637a2a..c3a2b5a 100644
--- a/sh-i18n--envsubst.c
+++ b/sh-i18n--envsubst.c
@@ -230,8 +230,7 @@ cmp_string (const void *pstr1, const void *pstr2)
 static inline void
 string_list_sort (string_list_ty *slp)
 {
-  if (slp->nitems > 0)
-    QSORT(slp->item, slp->nitems, cmp_string);
+  QSORT(slp->item, slp->nitems, cmp_string);
 }
 
 /* Test whether a sorted string list contains a given string.  */
-- 
2.10.0


  parent reply	other threads:[~2016-09-29 15:29 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-29 15:23 [PATCH 1/3] add QSORT René Scharfe
2016-09-29 15:27 ` [PATCH 2/3] use QSORT René Scharfe
2016-09-29 15:29 ` René Scharfe [this message]
2016-09-29 22:36 ` [PATCH 1/3] add QSORT Junio C Hamano
2016-09-29 23:21   ` René Scharfe
2016-09-29 23:40     ` René Scharfe
2016-10-01 16:19   ` René Scharfe
2016-10-03 16:46     ` Kevin Bracey
2016-10-03 17:09     ` Kevin Bracey
2016-10-03 22:00       ` René Scharfe
2016-10-04  5:28         ` Kevin Bracey
2016-10-04 20:31           ` René Scharfe
2016-10-05 15:00             ` Kevin Bracey

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