0.3.0: converge relibc to upstream 0.6.0 + Red Bear patches

tests/stdio/printf.c

@@ -1,3 +1,4 @@
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h> // free()
 #include <math.h> // INFINITY, NAN constants
@@ -64,6 +65,9 @@ int main(void) {
     printf("%G\n", 0.00001);
     printf("%E\n", 0.00001);
 
+    printf("%2$0*1$.*3$lf\n", 9, 1234.56, 2);
+    printf("%2$0*1$.*3$Lf\n", 9, 1234.56L, 2);
+
     double nonfinites[] = {INFINITY, -INFINITY, NAN, -NAN};
     char *float_formats[] = {"%e", "%E", "%f", "%F", "%g", "%G"};
     puts("\nNon-finite float madness:");
@@ -90,4 +94,15 @@ int main(void) {
     res = asprintf(&s, "test %s %d", "string", 2);
     printf("printed: %s, value: %d\n", s, res);
     free(s);
+
+    errno = EOWNERDEAD;
+    printf("\n%%m: %m\n");
+
+    puts("\nC23:");
+    printf("Binary %%b: %b\n", 4);
+    printf("Binary %%b alternate: %#b\n", 4);
+    printf("Binary %%B: %B\n", 4);
+    printf("Binary %%B alternate: %#B\n", 4);
+
+    return EXIT_SUCCESS;
 }