From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Wed, 3 Nov 2021 03:53:02 +0000 (-0700)
Subject: gvconfig: more precise error messages about config file reading
X-Git-Tag: 2.50.0~44^2~2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6b18d5fbbbaba0f7e81dffe3fa26173d7838e4fe;p=graphviz

gvconfig: more precise error messages about config file reading
---

diff --git a/lib/gvc/gvconfig.c b/lib/gvc/gvconfig.c
index 57eb956fe..86a9b630f 100644
--- a/lib/gvc/gvconfig.c
+++ b/lib/gvc/gvconfig.c
@@ -604,11 +604,14 @@ void gvconfig(GVC_t * gvc, boolean rescan)
     	        agerr (AGERR,"failed to open %s for read.\n", gvc->config_path);
 		return;
     	    }
+    	    else if (config_st.st_size == 0) {
+    	        agerr(AGERR, "%s is zero sized.\n", gvc->config_path);
+    	    }
     	    else {
     	        config_text = gmalloc((size_t)config_st.st_size + 1);
     	        sz = fread(config_text, 1, config_st.st_size, f);
     	        if (sz == 0) {
-    		    agerr(AGERR,"%s is zero sized, or other read error.\n", gvc->config_path);
+    	            agerr(AGERR, "%s read error.\n", gvc->config_path);
     	        }
     	        else {
     	            gvc->config_found = TRUE;