[BZ #5774]

	* stdlib/strtod_l.c (____STRTOF_INTERNAL): Consume closing brace
	on NAN(...) sequence.
	* stdlib/Makefile (tests): Add tst-strtod6.
	* stdlib/tst-strtod6.c: New file.

	* inet/inet6_opt.c (inet6_opt_init): Check extlen for overflow.

3 files changed, 57 insertions, 1 deletions

diff --git a/stdlib/Makefile b/stdlib/Makefile
index 63917812d0..1fe7f70177 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -69,7 +69,7 @@ tests		:= tst-strtol tst-strtod testmb testrand testsort testdiv   \
 		   test-a64l tst-qsort tst-system testmb2 bug-strtod2	    \
 		   tst-atof1 tst-atof2 tst-strtod2 tst-strtod3 tst-rand48-2 \
 		   tst-makecontext tst-strtod4 tst-strtod5 tst-qsort2	    \
-		   tst-makecontext2
+		   tst-makecontext2 tst-strtod6
 
 include ../Makeconfig
 
diff --git a/stdlib/strtod_l.c b/stdlib/strtod_l.c
index d1c2b62852..9c2f86a32b 100644
--- a/stdlib/strtod_l.c
+++ b/stdlib/strtod_l.c
@@ -594,6 +594,9 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
 		  mant = STRTOULL (startp + 1, &endp, 0);
 		  if (endp == cp)
 		    SET_MANTISSA (retval, mant);
+
+		  /* Consume the closing brace.  */
+		  ++cp;
 		}
 	    }
 
diff --git a/stdlib/tst-strtod6.c b/stdlib/tst-strtod6.c
new file mode 100644
index 0000000000..fdb104f9ca
--- /dev/null
+++ b/stdlib/tst-strtod6.c
@@ -0,0 +1,53 @@
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int
+do_test (void)
+{
+  static const char str[] = "NaN(blabla)something";
+  char *endp;
+  int result = 0;
+
+  double d = strtod (str, &endp);
+  if (!isnan (d))
+    {
+      puts ("strtod did not return NAN");
+      result = 1;
+    }
+  if (strcmp (endp, "something") != 0)
+    {
+      puts  ("strtod set incorrect end pointer");
+      result = 1;
+    }
+
+  float f = strtof (str, &endp);
+  if (!isnanf (f))
+    {
+      puts ("strtof did not return NAN");
+      result = 1;
+    }
+  if (strcmp (endp, "something") != 0)
+    {
+      puts  ("strtof set incorrect end pointer");
+      result = 1;
+    }
+
+  long double ld = strtold (str, &endp);
+  if (!isnan (ld))
+    {
+      puts ("strtold did not return NAN");
+      result = 1;
+    }
+  if (strcmp (endp, "something") != 0)
+    {
+      puts  ("strtold set incorrect end pointer");
+      result = 1;
+    }
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"