From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sun, 4 Jul 2021 04:09:18 +0000 (-0700)
Subject: take a const pointer in agstrbind
X-Git-Tag: 2.49.0~58^2~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=dfbdeae186fac2a45247761d61e03248d060a13b;p=graphviz

take a const pointer in agstrbind

This function does not modify its string argument, so it is more accurate to
qualify it as const. Related to #634.
---

diff --git a/lib/cgraph/cgraph.h b/lib/cgraph/cgraph.h
index 1e91f4a0f..d1687e9bb 100644
--- a/lib/cgraph/cgraph.h
+++ b/lib/cgraph/cgraph.h
@@ -305,7 +305,7 @@ CGRAPH_API int agobjkind(void *);
 CGRAPH_API char *agstrdup(Agraph_t *, const char *);
 CGRAPH_API char *agstrdup_html(Agraph_t *, const char *);
 CGRAPH_API int aghtmlstr(const char *);
-CGRAPH_API char *agstrbind(Agraph_t * g, char *);
+CGRAPH_API char *agstrbind(Agraph_t * g, const char *);
 CGRAPH_API int agstrfree(Agraph_t *, char *);
 CGRAPH_API char *agcanon(char *, int);
 CGRAPH_API char *agstrcanon(char *, char *);
diff --git a/lib/cgraph/refstr.c b/lib/cgraph/refstr.c
index a53461822..db14202bf 100644
--- a/lib/cgraph/refstr.c
+++ b/lib/cgraph/refstr.c
@@ -89,7 +89,7 @@ static char *refstrbind(Dict_t * strdict, const char *s)
 	return NULL;
 }
 
-char *agstrbind(Agraph_t * g, char *s)
+char *agstrbind(Agraph_t * g, const char *s)
 {
     return refstrbind(refdict(g), s);
 }