Fix parsing of 0e+0 as float

diff --git a/ChangeLog b/ChangeLog
index 5673693..4b71c4a 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2013-10-31  Andreas Schwab  <schwab@suse.de>
+
+       [BZ# 15917]
+       * stdio-common/vfscanf.c (_IO_vfwscanf): Handle leading '0' not
+       followed by 'x' as part of digit sequence.
+       * stdio-common/tst-sscanf.c (double_tests2): New tests.
+
 2013-10-31  Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
 
        [BZ #16037]

diff --git a/NEWS b/NEWS
index e3330fc..d245119 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -15,8 +15,9 @@ Version 2.19
   15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748, 15749,
   15754, 15760, 15764, 15797, 15799, 15825, 15844, 15847, 15849, 15855,
   15856, 15857, 15859, 15867, 15886, 15887, 15890, 15892, 15893, 15895,
-  15897, 15905, 15909, 15919, 15921, 15923, 15939, 15948, 15963, 15966,
-  15988, 16032, 16034, 16036, 16037, 16041, 16071, 16072, 16074, 16078.
+  15897, 15905, 15909, 15917, 15919, 15921, 15923, 15939, 15948, 15963,
+  15966, 15988, 16032, 16034, 16036, 16037, 16041, 16071, 16072, 16074,
+  16078.
 
 * CVE-2012-4412 The strcoll implementation caches indices and rules for
   large collation sequences to optimize multiple passes.  This cache

diff --git a/stdio-common/tst-sscanf.c b/stdio-common/tst-sscanf.c
index 1edb227..3c34f58 100644 (file)
--- a/stdio-common/tst-sscanf.c
+++ b/stdio-common/tst-sscanf.c
@@ -109,6 +109,19 @@ struct test double_tests[] =
   { L("-inf"), L("%g"), 1 }
 };
 
+struct test2
+{
+  const CHAR *str;
+  const CHAR *fmt;
+  int retval;
+  char residual;
+} double_tests2[] =
+{
+  { L("0e+0"), L("%g%c"), 1, 0 },
+  { L("0xe+0"), L("%g%c"), 2, '+' },
+  { L("0x.e+0"), L("%g%c"), 2, '+' },
+};
+
 int
 main (void)
 {
@@ -196,5 +209,26 @@ main (void)
        }
     }
 
+  for (i = 0; i < sizeof (double_tests2) / sizeof (double_tests2[0]); ++i)
+    {
+      double dummy;
+      int ret;
+      char c = 0;
+
+      if ((ret = SSCANF (double_tests2[i].str, double_tests2[i].fmt,
+                        &dummy, &c)) != double_tests2[i].retval)
+       {
+         printf ("double_tests2[%d] returned %d != %d\n",
+                 i, ret, double_tests2[i].retval);
+         result = 1;
+       }
+      else if (ret == 2 && c != double_tests2[i].residual)
+       {
+         printf ("double_tests2[%d] stopped at '%c' != '%c'\n",
+                 i, c, double_tests2[i].residual);
+         result = 1;
+       }
+    }
+
   return result;
 }

diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c
index 78dc2fc..e6fa8f3 100644 (file)
--- a/stdio-common/vfscanf.c
+++ b/stdio-common/vfscanf.c
@@ -1966,6 +1966,8 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
                  if (width > 0)
                    --width;
                }
+             else
+               got_digit = 1;
            }
 
          while (1)