X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/6afe7f23b0440d3261fb99e3f7b4d56bd00713cc..d051056f921f465c487a85f9fa29a2324332bc4b:/popt/findme.c

diff --git a/popt/findme.c b/popt/findme.c
index f2ad05bb..e98e0611 100644
--- a/popt/findme.c
+++ b/popt/findme.c
@@ -1,6 +1,10 @@
-/* (C) 1998 Red Hat Software, Inc. -- Licensing details are in the COPYING
+/** \ingroup popt
+ * \file popt/findme.c
+ */
+
+/* (C) 1998-2000 Red Hat, Inc. -- Licensing details are in the COPYING
    file accompanying popt source distributions, available from 
-   ftp://ftp.redhat.com/pub/code/popt */
+   ftp://ftp.rpm.org/pub/rpm/dist. */
 
 #include "system.h"
 #include "findme.h"
@@ -9,38 +13,38 @@ const char * findProgramPath(const char * argv0) {
     char * path = getenv("PATH");
     char * pathbuf;
     char * start, * chptr;
-    char * buf, *local = NULL;
+    char * buf;
 
-    /* If there is a / in the argv[0], it has to be an absolute
-       path */
+    if (argv0 == NULL) return NULL;	/* XXX can't happen */
+    /* If there is a / in the argv[0], it has to be an absolute path */
     if (strchr(argv0, '/'))
 	return xstrdup(argv0);
 
-    if (!path) return NULL;
+    if (path == NULL) return NULL;
 
-    local = start = pathbuf = malloc(strlen(path) + 1);
-    buf = malloc(strlen(path) + strlen(argv0) + 2);
+    start = pathbuf = alloca(strlen(path) + 1);
+    buf = malloc(strlen(path) + strlen(argv0) + sizeof("/"));
+    if (buf == NULL) return NULL;	/* XXX can't happen */
     strcpy(pathbuf, path);
 
     chptr = NULL;
+    /*@-branchstate@*/
     do {
 	if ((chptr = strchr(start, ':')))
 	    *chptr = '\0';
 	sprintf(buf, "%s/%s", start, argv0);
 
-	if (!access(buf, X_OK)) {
-		if (local) free(local);
-		return buf;
-	}
+	if (!access(buf, X_OK))
+	    return buf;
 
 	if (chptr) 
 	    start = chptr + 1;
 	else
 	    start = NULL;
     } while (start && *start);
+    /*@=branchstate@*/
 
     free(buf);
-    if (local) free(local);
 
     return NULL;
 }