sscanf() is broken (hangs / stores unexpected values)

[JayFoxRox]

This code (taken from Neverball) leads to faulty behaviour:

#ifdef NXDK
#include <hal/video.h>
#include <hal/debug.h>
#else
#define debugPrint(...) printf(__VA_ARGS__)
#endif
#include <stdio.h>

int main() {

#ifdef NXDK
  XVideoSetMode(640, 480, 32, REFRESH_DEFAULT);
#endif

  const char* line = "fullscreen                0";

  int ks, ke, vs;

  ks = -1;
  ke = -1;
  vs = -1;

  debugPrint("Starting scan\n");

  int ret = sscanf(line, " %n%*s%n %n", &ks, &ke, &vs);

  debugPrint("Result %d = %d %d %d\n", ret, ks, ke, vs);

#ifdef NXDK
  while(1);
#else
  return 0;
#endif
}

On my desktop with clang I get:

Starting scan
Result 0 = 0 10 26

On nxdk (in XQEMU) I only get:

Starting scan

(it seems to hang before the second debugPrint is reached)

On nxdk (in XQEMU) I got this with an older revision of the code which didn't retrieve / print int ret:

Starting scan
Result 1701995379 1819047270 10

Probably a bug in pdclib? CC @DevSolar

[JayFoxRox]

This was fixed upstream in DevSolar#8.
I'm not sure if nxdk-pdclib has the fix yet.