* eval.c (rb_load): put rb_load_file() in a thread critical

  section. [ruby-dev:20490]

* eval.c (compile): put rb_compile_string() in a thread critical
  section.

* variable.c (rb_const_get_0): should not warn if constant is not
  defined. (ruby-bugs-ja PR#509)

* bignum.c (rb_big2dbl): give a warning on overflow.
  (ruby-bugs-ja PR#510)

* util.c (ruby_strtod): change MDMAXEXPT from 511 to 308.

* pack.c (utf8_to_uv): long is sufficient.  LONG_LONG is not
  required.

* bignum.c (rb_big2str): support 32 bit (without `long long' type)
  machines. (ruby-bugs-ja PR#512)


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@4050 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 9 deletions

diff --git a/util.c b/util.c
index 9a3ce69c2..ae2bc8de9 100644
--- a/util.c
+++ b/util.c
@@ -665,11 +665,8 @@ ruby_getcwd()
 #define TRUE 1
 #define FALSE 0
 
-static int maxExponent = 511;	/* Largest possible base 10 exponent.  Any
-				 * exponent larger than this will already
-				 * produce underflow or overflow, so there's
-				 * no need to worry about additional digits.
-				 */
+static  int     MDMINEXPT       = -323;
+static  int     MDMAXEXPT       =  309;
 static double powersOf10[] = {	/* Table giving binary powers of 10.  Entry */
     10.0,			/* is 10^2^i.  Used to convert decimal */
     100.0,			/* exponents into floating-point numbers. */
@@ -862,12 +859,12 @@ ruby_strtod(string, endPtr)
 	 * fraction.
 	 */
     
-	if (exp > maxExponent) {
-	    exp = maxExponent;
+	if (exp > MDMAXEXPT - 18) {
+	    exp = MDMAXEXPT;
 	    errno = ERANGE;
 	}
-	else if (exp < -maxExponent) {
-	    exp = -maxExponent;
+	else if (exp < MDMINEXPT + 18) {
+	    exp = MDMINEXPT;
 	    errno = ERANGE;
 	}
 	fracExp = exp;