Changes cherry-picked from
https://sources.debian.org/patches/linux-atm/1:2.5.1-7/misc/
https://sources.debian.org/patches/linux-atm/1:2.5.1-7/linux-atm-2.5.2-c99-musl.patch/
to fix -Werror=format
Also all changes I did on second pass for printing size_t and friends
https://bugs.gentoo.org/949721
--- a/src/ilmid/asn1/asn_int.c
+++ b/src/ilmid/asn1/asn_int.c
@@ -185,7 +185,7 @@ FILE* f _AND_
 AsnInt* v _AND_
 unsigned short int indent)
 {
-    fprintf(f,"%d", *v);
+    fprintf(f,"%ld", *v);
 } 
 
 
--- a/src/ilmid/asn1/asn_oid.c
+++ b/src/ilmid/asn1/asn_oid.c
@@ -127,7 +127,7 @@ unsigned short int indent)
     if (firstArcNum > 2)
         firstArcNum = 2;
 
-    fprintf(f,"%u %u", firstArcNum, arcNum - (firstArcNum * 40));
+    fprintf(f,"%d %lu", firstArcNum, arcNum - (firstArcNum * 40));
 
     for (; i < v->octetLen ; )
     {
@@ -136,7 +136,7 @@ unsigned short int indent)
 
         arcNum = (arcNum << 7) + (v->octs[i] & 0x7f);
         i++;
-        fprintf(f," %u", arcNum);
+        fprintf(f," %lu", arcNum);
     }
     fprintf(f,"}");
 
--- a/src/lib/ans.c
+++ b/src/lib/ans.c
@@ -41,7 +41,7 @@
 static int ans(const char *text,int wanted,void *result,int res_len)
 {
     unsigned char answer[MAX_ANSWER];
-    unsigned char name[MAX_NAME];
+    char name[MAX_NAME];
     unsigned char *pos,*data,*found;
     int answer_len,name_len,data_len,found_len;
     int questions,answers;
--- a/src/test/ttcp.c
+++ b/src/test/ttcp.c
@@ -664,7 +664,7 @@ int no_check = 0;
     exit(0);
 
   usage:
-    fprintf(stderr, Usage);
+    fprintf(stderr, "%s", Usage);
     exit(1);
 }
 
Further changes are novel and fix size_t formatting
--- a/src/arpd/atmarp.c
+++ b/src/arpd/atmarp.c
@@ -67,7 +67,7 @@
     }
     if (req->type == art_query) return query_result(&reply);
     if (len != sizeof(int)) {
-	fprintf(stderr,"bad read: %d != %d\n",len,sizeof(int));
+	fprintf(stderr,"bad read: %d != %zu\n",len,sizeof(int));
 	exit(1);
     }
     if (*(int *) &reply < 0) {
--- a/src/ilmid/asn1/asn_int.c
+++ b/src/ilmid/asn1/asn_int.c
@@ -370,5 +370,5 @@
 UAsnInt* v _AND_
 unsigned short int indent)
 {
-    fprintf(f,"%u", *v);
+    fprintf(f,"%lu", *v);
 } 
--- a/src/lane/mem_lecs.c
+++ b/src/lane/mem_lecs.c
@@ -77,7 +77,7 @@
     free(tmp->start);
     free(tmp);
   } else {
-    printf("Trying to free memory by %s, allocated by %s, size %d\n",
+    printf("Trying to free memory by %s, allocated by %s, size %zu\n",
 	   unit, tmp->unit, tmp->size);
   }
 }
@@ -89,6 +89,6 @@
 
   printf("Dumping memory allocation\n");
   for (tmp=memlist;tmp;tmp=tmp->next)
-    printf("%s : %d bytes from %p\n", tmp->unit, tmp->size, tmp->start);
+    printf("%s : %zu bytes from %p\n", tmp->unit, tmp->size, tmp->start);
   printf("-------------------------\n");
 }
--- a/src/maint/atmaddr.c
+++ b/src/maint/atmaddr.c
@@ -97,7 +97,7 @@
     }
     if (cmd != ATM_GETADDR) return 0;
     if (req.length % sizeof(*addr)) {
-	fprintf(stderr,"internal error: len %d %% %d\n",req.length,
+	fprintf(stderr,"internal error: len %d %% %zu\n",req.length,
 	  sizeof(*addr));
 	return 1;
     }
--- a/src/maint/atmtcp.c
+++ b/src/maint/atmtcp.c
@@ -579,7 +579,7 @@
 	exit(1);
     }
     if (wrote != sizeof(stream)) {
-	fprintf(stderr,"short write (%d < %d)\n",wrote,sizeof(stream));
+	fprintf(stderr,"short write (%d < %zu)\n",wrote,sizeof(stream));
 	exit(1);
     }
     wrote = write(fd,data,size);
--- a/src/mpoad/lecs.c
+++ b/src/mpoad/lecs.c
@@ -157,7 +157,7 @@
                 /* Sampo-Add: end */
         }
         if (end_of_tlvs - tlvs != 0)
-                printf("mpcd: lecs.c: get_reply: ignoring %d bytes of trailing TLV carbage\n",
+                printf("mpcd: lecs.c: get_reply: ignoring %ld bytes of trailing TLV carbage\n",
                        end_of_tlvs - tlvs);
         return 1;
 }
--- a/src/switch/swc.c
+++ b/src/switch/swc.c
@@ -28,7 +28,7 @@
 	exit(1);
     }
     if (size != sizeof(*msg)) {
-	fprintf(stderr,"bad write: %d != %d\n",size,sizeof(*msg));
+	fprintf(stderr,"bad write: %d != %zu\n",size,sizeof(*msg));
 	exit(1);
     }
     size = read(s,msg,sizeof(*msg));
@@ -37,7 +37,7 @@
 	exit(1);
     }
     if (size != sizeof(*msg)) {
-	fprintf(stderr,"bad read: %d != %d\n",size,sizeof(*msg));
+	fprintf(stderr,"bad read: %d != %zu\n",size,sizeof(*msg));
 	exit(1);
     }
 }
--- a/src/test/isp.c
+++ b/src/test/isp.c
@@ -37,7 +37,7 @@
     wrote = write(sock,msg,sizeof(*msg));
     if (wrote == sizeof(*msg)) return;
     if (wrote < 0) perror("write");
-    else fprintf(stderr,"bad write: %d != %d\n",wrote,sizeof(*msg));
+    else fprintf(stderr,"bad write: %d != %zu\n",wrote,sizeof(*msg));
     exit(1);
 }
 
@@ -49,7 +49,7 @@
     got = read(sock,msg,sizeof(*msg));
     if (got == sizeof(*msg)) return;
     if (got < 0) perror("read");
-    else fprintf(stderr,"bad read: %d != %d\n",got,sizeof(*msg));
+    else fprintf(stderr,"bad read: %d != %zu\n",got,sizeof(*msg));
     exit(1);
 }
 
--- a/src/test/window.c
+++ b/src/test/window.c
@@ -180,7 +180,7 @@
        /* Get a reply */
        size = read(s2, buffer2, REPLY_SIZE);
        if (size != REPLY_SIZE) {
-	 fprintf(stderr,"Received reply of length %d, should be %d.\n",
+	 fprintf(stderr,"Received reply of length %zd, should be %d.\n",
 		 size,REPLY_SIZE);
        }
 #endif
@@ -264,7 +264,7 @@
 	 }
 
        } else {
-	 fprintf(stderr,"Received message of length %d, should be %d.\n",
+	 fprintf(stderr,"Received message of length %zd, should be %d.\n",
 		 size,PINGPONG_SIZE);
        }
      }