--- musl-1.1.16.orig/src/passwd/getgr_r.c
+++ musl-1.1.16/src/passwd/getgr_r.c
@@ -1,5 +1,6 @@
 #include "pwf.h"
 #include <pthread.h>
+#include <errno.h>
 
 #define FIX(x) (gr->gr_##x = gr->gr_##x-line+buf)
 
@@ -19,6 +20,7 @@
 	if (*res && size < len + (nmem+1)*sizeof(char *) + 32) {
 		*res = 0;
 		rv = ERANGE;
+		errno = ERANGE;
 	}
 	if (*res) {
 		buf += (16-(uintptr_t)buf)%16;
--- musl-1.1.16.orig/src/passwd/getpw_r.c
+++ musl-1.1.16/src/passwd/getpw_r.c
@@ -1,5 +1,6 @@
 #include "pwf.h"
 #include <pthread.h>
+#include <errno.h>
 
 #define FIX(x) (pw->pw_##x = pw->pw_##x-line+buf)
 
@@ -16,6 +17,7 @@
 	if (*res && size < len) {
 		*res = 0;
 		rv = ERANGE;
+		errno = ERANGE;
 	}
 	if (*res) {
 		memcpy(buf, line, len);
--- musl-1.1.16.orig/src/passwd/getspnam_r.c
+++ musl-1.1.16/src/passwd/getspnam_r.c
@@ -3,6 +3,7 @@
 #include <sys/stat.h>
 #include <ctype.h>
 #include <pthread.h>
+#include <errno.h>
 #include "pwf.h"
 
 /* This implementation support Openwall-style TCB passwords in place of
@@ -104,6 +105,7 @@
 		}
 		if (buf[k-1] != '\n') {
 			rv = ERANGE;
+			errno = ERANGE;
 			break;
 		}