src/share/vm/runtime/arguments.cpp

rev 8851 : [mq]: webrev.00
rev 8852 : [mq]: webrev.01
rev 8853 : [mq]: webrev.02

@@ -579,12 +579,14 @@
     return false;
   }
 }
 
 static bool set_fp_numeric_flag(char* name, char* value, Flag::Flags origin) {
-  double v;
-  if (sscanf(value, "%lf", &v) != 1) {
+  char* end;
+  errno = 0;
+  double v = strtod(value, &end);
+  if ((errno != 0) || (*end != 0)) {
     return false;
   }
 
   if (CommandLineFlags::doubleAtPut(name, &v, origin) == Flag::SUCCESS) {
     return true;

@@ -714,13 +716,13 @@
       value = NULL;
     }
     return set_string_flag(name, value, origin);
   }
 
-#define SIGNED_FP_NUMBER_RANGE "[-0123456789.]"
+#define SIGNED_FP_NUMBER_RANGE "[-0123456789.eE+]"
 #define SIGNED_NUMBER_RANGE    "[-0123456789]"
-#define        NUMBER_RANGE    "[0123456789]"
+#define        NUMBER_RANGE    "[0123456789eE+-]"
   char value[BUFLEN + 1];
   char value2[BUFLEN + 1];
   if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) {
     // Looks like a floating-point number -- try again with more lenient format string
     if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) {