From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sat, 19 Nov 2022 23:18:26 +0000 (-0800)
Subject: neatogen: mark 'adjustMode' const
X-Git-Tag: 7.0.3~1^2~13
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=17588c3fe33a5e7d5226801047d560555a535a0b;p=graphviz

neatogen: mark 'adjustMode' const

This makes it more obvious to the compiler it can e.g. unroll and inline loops
involving this array.
---

diff --git a/lib/neatogen/adjust.c b/lib/neatogen/adjust.c
index 3f54ee484..79a50fe52 100644
--- a/lib/neatogen/adjust.c
+++ b/lib/neatogen/adjust.c
@@ -936,7 +936,7 @@ typedef struct {
  * adjustMode[0] corresponds to overlap=true
  * adjustMode[1] corresponds to overlap=false
  */
-static lookup_t adjustMode[] = {
+static const lookup_t adjustMode[] = {
     ITEM(AM_NONE, "", "none"),
 #if ((defined(HAVE_GTS) || defined(HAVE_TRIANGLE)) && defined(SFDP))
     ITEM(AM_PRISM, "prism", "prism"),
@@ -984,7 +984,7 @@ setPrismValues (Agraph_t* g, char* s, adjust_data* dp)
  */
 static adjust_data *getAdjustMode(Agraph_t* g, char *s, adjust_data* dp)
 {
-    lookup_t *ap = adjustMode + 1;
+    const lookup_t *ap = adjustMode + 1;
     if (s == NULL || *s == '\0') {
 	dp->mode = adjustMode[0].mode;
 	dp->print = adjustMode[0].print;