1 files changed, 128 insertions, 0 deletions
diff --git a/stdio-common/scanf17.c b/stdio-common/scanf17.c
new file mode 100644
index 0000000000..ee9024f9b7
--- /dev/null
+++ b/stdio-common/scanf17.c
@@ -0,0 +1,128 @@
+#undef _GNU_SOURCE
+#define _XOPEN_SOURCE 600
+/* The following macro definitions are a hack.  They word around disabling
+   the GNU extension while still using a few internal headers.  */
+#define u_char unsigned char
+#define u_short unsigned short
+#define u_int unsigned int
+#define u_long unsigned long
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#define FAIL() \
+  do {							\
+    result = 1;						\
+    printf ("test at line %d failed\n", __LINE__);	\
+  } while (0)
+
+static int
+xsscanf (const char *str, const char *fmt, ...)
+{
+  va_list ap;
+  va_start (ap, fmt);
+  int ret = vsscanf (str, fmt, ap);
+  va_end (ap);
+  return ret;
+}
+
+static int
+xscanf (const char *fmt, ...)
+{
+  va_list ap;
+  va_start (ap, fmt);
+  int ret = vscanf (fmt, ap);
+  va_end (ap);
+  return ret;
+}
+
+static int
+xfscanf (FILE *f, const char *fmt, ...)
+{
+  va_list ap;
+  va_start (ap, fmt);
+  int ret = vfscanf (f, fmt, ap);
+  va_end (ap);
+  return ret;
+}
+
+int
+main (void)
+{
+  float f;
+  double d;
+  char c[8];
+  int result = 0;
+
+  if (xsscanf (" 0.25s x", "%e%3c", &f, c) != 2)
+    FAIL ();
+  else if (f != 0.25 || memcmp (c, "s x", 3) != 0)
+    FAIL ();
+  if (xsscanf (" 1.25s x", "%as%2c", &f, c) != 2)
+    FAIL ();
+  else if (f != 1.25 || memcmp (c, " x", 2) != 0)
+    FAIL ();
+  if (xsscanf (" 2.25s x", "%las%2c", &d, c) != 2)
+    FAIL ();
+  else if (d != 2.25 || memcmp (c, " x", 2) != 0)
+    FAIL ();
+  if (xsscanf (" 3.25S x", "%4aS%2c", &f, c) != 2)
+    FAIL ();
+  else if (f != 3.25 || memcmp (c, " x", 2) != 0)
+    FAIL ();
+  if (xsscanf (" 4.25[0-9.] x", "%a[0-9.]%2c", &f, c) != 2)
+    FAIL ();
+  else if (f != 4.25 || memcmp (c, " x", 2) != 0)
+    FAIL ();
+  if (xsscanf (" 5.25[0-9.] x", "%la[0-9.]%2c", &d, c) != 2)
+    FAIL ();
+  else if (d != 5.25 || memcmp (c, " x", 2) != 0)
+    FAIL ();
+
+  const char *tmpdir = getenv ("TMPDIR");
+  if (tmpdir == NULL || tmpdir[0] == '\0')
+    tmpdir = "/tmp";
+
+  char fname[strlen (tmpdir) + sizeof "/tst-scanf17.XXXXXX"];
+  sprintf (fname, "%s/tst-scanf17.XXXXXX", tmpdir);
+  if (fname == NULL)
+    FAIL ();
+
+  /* Create a temporary file.   */
+  int fd = mkstemp (fname);
+  if (fd == -1)
+    FAIL ();
+
+  FILE *fp = fdopen (fd, "w+");
+  if (fp == NULL)
+    FAIL ();
+  else
+    {
+      if (fputs (" 1.25s x", fp) == EOF)
+	FAIL ();
+      if (fseek (fp, 0, SEEK_SET) != 0)
+	FAIL ();
+      if (xfscanf (fp, "%as%2c", &f, c) != 2)
+	FAIL ();
+      else if (f != 1.25 || memcmp (c, " x", 2) != 0)
+	FAIL ();
+
+      if (freopen (fname, "r", stdin) == NULL)
+	FAIL ();
+      else
+	{
+	  if (xscanf ("%as%2c", &f, c) != 2)
+	    FAIL ();
+	  else if (f != 1.25 || memcmp (c, " x", 2) != 0)
+	    FAIL ();
+	}
+
+      fclose (fp);
+    }
+
+  remove (fname);
+
+  return result;
+}