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-rw-r--r--ChangeLog5
-rw-r--r--test/ruby/test_float.rb1
-rw-r--r--util.c5
3 files changed, 9 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index 76f3dfdb9d..1fde82cc6a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Sep 6 09:47:24 2010 NARUSE, Yui <naruse@ruby-lang.org>
+
+ * util.c (ruby_strtod): check there is at least 1 digit after
+ "0x" before ".". [ruby-dev:42183] #3790
+
Mon Sep 6 09:44:50 2010 NARUSE, Yui <naruse@ruby-lang.org>
* util.c (ruby_strtod): check integr overflow.
diff --git a/test/ruby/test_float.rb b/test/ruby/test_float.rb
index 08ec63a6f9..1146b583f0 100644
--- a/test/ruby/test_float.rb
+++ b/test/ruby/test_float.rb
@@ -447,6 +447,7 @@ class TestFloat < Test::Unit::TestCase
assert(!Float(([1] * 10000).join("_")).infinite?) # is it really OK?
assert_raise(ArgumentError) { Float("1.0\x001") }
assert_equal(15.9375, Float('0xf.fp0'))
+ assert_raise(ArgumentError) { Float('0x') }
assert_raise(ArgumentError) { Float('0xf.fp') }
assert_equal(Float::INFINITY, Float('0xf.fp1000000000000000'))
assert_equal(1, suppress_warning {Float("1e10_00")}.infinite?)
diff --git a/util.c b/util.c
index 9d10498a66..40b4573660 100644
--- a/util.c
+++ b/util.c
@@ -2123,10 +2123,11 @@ break2:
s0 = ++s;
adj = 0;
- while (*++s && (s1 = strchr(hexdigit, *s))) {
+ if (!*++s || !(s1 = strchr(hexdigit, *s))) goto ret0;
+ do {
adj *= 16;
adj += (s1 - hexdigit) & 15;
- }
+ } while (*++s && (s1 = strchr(hexdigit, *s)));
if (*s == '.') {
aadj = 1.;