This patch will fix the following libmikmod 3.1.9 problems:

  - listing all the drivers, or selecting a missing driver, can cause a
    coredump.
  
To apply the patch, enter your mikmod source directory and run

  patch -p1 < path/to/patch-libmikmod-3.1.9-a

(adjust the path to the patch file, of course).


diff -uNr libmikmod-3.1.9/playercode/mdriver.c libmikmod-3.1.10/playercode/mdriver.c
--- libmikmod-3.1.9/playercode/mdriver.c	Mon Feb 14 22:10:22 2000
+++ libmikmod-3.1.10/playercode/mdriver.c	Tue Oct 17 00:18:06 2000
@@ -20,7 +20,7 @@
 
 /*==============================================================================
 
-  $Id: mdriver.c,v 1.33 2000/02/14 22:10:22 miod Exp $
+  $Id: mdriver.c,v 1.35 2000/10/17 00:18:06 miod Exp $
 
   These routines are used to access the available soundcard drivers.
 
@@ -175,14 +175,18 @@
 
 	MUTEX_LOCK(lists);
 	/* compute size of buffer */
-	for(l=firstdriver;l;l=l->next) len+=4+(l->next?1:0)+strlen(l->Version);
+	for(l=firstdriver;l;l=l->next)
+		if(l->Version)
+			len+=4+(l->next?1:0)+strlen(l->Version);
 
 	if(len)
 		if((list=_mm_malloc(len*sizeof(CHAR)))) {
 			list[0]=0;
 			/* list all registered device drivers : */
 			for(t=1,l=firstdriver;l;l=l->next,t++)
-				sprintf(list,(l->next)?"%s%2d %s\n":"%s%2d %s",list,t,l->Version);
+				if(l->Version)
+					sprintf(list,(l->next)?"%s%2d %s\n":"%s%2d %s",
+					    list,t,l->Version);
 		}
 	MUTEX_UNLOCK(lists);
 	return list;
@@ -219,8 +223,11 @@
 	MUTEX_LOCK(lists);
 	cruise=firstdriver;
 	while(cruise) {
-		if (!(strcasecmp(alias,cruise->Alias))) break;
-		cruise=cruise->next;rank++;
+		if (cruise->Alias) {
+			if (!(strcasecmp(alias,cruise->Alias))) break;
+			rank++;
+		}
+		cruise=cruise->next;
 	}
 	if(!cruise) rank=0;
 	MUTEX_UNLOCK(lists);
@@ -469,7 +476,8 @@
 		cmdline=NULL;
 
 		for(t=1,md_driver=firstdriver;md_driver;md_driver=md_driver->next,t++)
-			if(md_driver->IsPresent()) break;
+			if(md_driver->Version)
+				if(md_driver->IsPresent()) break;
 
 		if(!md_driver) {
 			_mm_errno = MMERR_DETECTING_DEVICE;
@@ -481,7 +489,9 @@
 		md_device = t;
 	} else {
 		/* if n>0, use that driver */
-		for(t=1,md_driver=firstdriver;(md_driver)&&(t!=md_device);md_driver=md_driver->next,t++);
+		for(t=1,md_driver=firstdriver;(md_driver)&&(t!=md_device);md_driver=md_driver->next)
+			if(md_driver->Version)
+				t++;
 
 		if(!md_driver) {
 			_mm_errno = MMERR_INVALID_DEVICE;