2 files changed, 57 insertions, 0 deletions
diff --git a/test/stdio/Makefile.in b/test/stdio/Makefile.in
index 0bfbd1362..14b5f19b9 100644
--- a/test/stdio/Makefile.in
+++ b/test/stdio/Makefile.in
@@ -2,3 +2,7 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 
 DODIFF_64bit := 1
+
+ifeq ($(UCLIBC_HAS_GLIBC_CUSTOM_STREAMS),)
+TESTS_DISABLED += tst-fmemopen
+endif
diff --git a/test/stdio/tst-fmemopen.c b/test/stdio/tst-fmemopen.c
new file mode 100644
index 000000000..384faa1c9
--- /dev/null
+++ b/test/stdio/tst-fmemopen.c
@@ -0,0 +1,53 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static char *text_input = "1 23 43";
+
+static const char *good_answer = "1 529 1849 ";
+
+
+static int
+do_test (void)
+{
+    FILE *out, *in;
+    int v, s;
+    size_t size;
+    char *ptr;
+
+    in = fmemopen(text_input, strlen(text_input), "r");
+    if (in == NULL) {
+        perror("fmemopen");
+	return 1;
+    }
+
+    out = open_memstream(&ptr, &size);
+    if (out == NULL) {
+        perror("open_memstream");
+	return 1;
+    }
+
+    for (;;) {
+        s = fscanf(in, "%d", &v);
+        if (s <= 0)
+            break;
+
+        s = fprintf(out, "%d ", v * v);
+        if (s == -1) {
+            puts("fprintf failed");
+	    exit(1);
+	}
+    }
+    fclose(in);
+    fclose(out);
+
+    if (size != strlen(good_answer) || strcmp(good_answer, ptr) != 0) {
+	printf("failed: size=%zu; ptr=%s\n", size, ptr);
+	exit(1);
+    }
+    free(ptr);
+    exit(0);
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"