I don't see any obvious way to test this as it's not required or build required by anything in Mageia from what I can see.

CC: (none) => thierry.vignaud

Indeed.
I only packaged it in order to test building stage1 with musl instead of dietlibc.
We ended in using glibc instead.
You can just push the package or just try building a small C "hello world" program in order to check it's still working.

Thanks for the suggestion Thierry, I didn't even think of that :o)

The only downside to hello world is that it doesn't make use of the code affected by this update.  So, I wrote a small DNS resolver program that uses gethostbyname, which the upstream advisory mentions should make use of the affected code.  I ran my program with the updated musl on Mageia 4 i586 and it works fine.  Interestingly enough, compiled with glibc it doesn't seem to work!  (It always returns host not found).

How to use this program:
- install musl-devel
- save the following code (at the bottom) as lookup.c
- run "musl-gcc -o lookup lookup.c"
- use the "lookup" binary created and give a host as a command line arg:
  lookup www.yahoo.com

It should give some valid output.  I get (for the above example):
Name:           fd-fp3.wg1.b.yahoo.com
Alias 0:        fd-fp3.wg1.b.yahoo.com
Alias 1:        www.yahoo.com
Type:           IPv4
Address 0:      98.139.180.149
Address 1:      98.139.183.24

Code:
#include <stdio.h>
#include <stddef.h>
#include <netdb.h>
extern int h_errno;

int main(int argc, char *argv[]){
  struct hostent *res = gethostbyname(argv[1]);
  char *alias, *address;
  int i = 0, j;
  switch(h_errno) {
    case HOST_NOT_FOUND:
      printf("Host not found\n");
      break;
    case TRY_AGAIN:
      printf("Try again\n");
      break;
    case NO_RECOVERY:
      printf("Non-recoverable error\n");
      break;
    case NO_DATA:
      printf("No data\n");
      break;
    default:
      printf("Name:\t\t%s\n", res->h_name);
      alias = res->h_aliases[i];
      while (alias != NULL) {
        printf("Alias %d:\t%s\n", i, alias);
        alias = res->h_aliases[++i];
      }
      printf("Type:\t\t");
      switch(res->h_addrtype){
        case AF_INET:
          printf("IPv4\n");
          break;
        case AF_INET6:
          printf("IPv6\n");
          break;
        default:
          printf("Unknown %d-byte length address\n", res->h_length);
      }
      i = 0;
      address = res->h_addr_list[i];
      while (address != NULL) {
        printf("Address %d:\t", i);
        for (j=0;j < res->h_length;j++) {
          printf("%hhu", (unsigned)address[j]);
          if (j != res->h_length-1)
            printf(".");
          else
            printf("\n");
        }
        address = res->h_addr_list[++i];
      }
  }
  return h_errno;
}

When you run the binary you make, you'll most likely need a ./:
./lookup www.yahoo.com

Adding the whiteboard marker for my previous testing (i586).

Whiteboard: has_procedure => has_procedure MGA4-32-OK

same tests ok under x86_64

CC: (none) => makowski.mageia
Whiteboard: has_procedure MGA4-32-OK => has_procedure MGA4-32-OK MGA4-64-OK

Thanks both. Validating. Advisory uploaded.

Could sysadmin please push to 4 updates

Thanks

Keywords: (none) => validated_update
Whiteboard: has_procedure MGA4-32-OK MGA4-64-OK => has_procedure advisory MGA4-32-OK MGA4-64-OK
CC: (none) => sysadmin-bugs

Update pushed:
http://advisories.mageia.org/MGASA-2014-0262.html

Status: NEW => RESOLVED
CC: (none) => tmb
Resolution: (none) => FIXED