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internal.h: supperss warning

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* internal.h (SIGNED_INTEGER_MAX): supperss warning C4146 on VC6.
  seems a logical ORed expression becomes unsigned.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41762 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2013-07-03 15:36:10 +00:00
parent c352ba8bb0
commit d1e0cc2750
2 changed files with 6 additions and 0 deletions
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ChangeLog
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@ -1,3 +1,8 @@
Thu Jul 4 00:36:03 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* internal.h (SIGNED_INTEGER_MAX): supperss warning C4146 on VC6.
seems a logical ORed expression becomes unsigned.
Thu Jul 4 00:13:01 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* ruby_atomic.h (rb_w32_atomic_cas): call InterlockedCompareExchange

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internal.h
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@ -29,6 +29,7 @@ extern "C" {
#define SIGNED_INTEGER_TYPE_P(int_type) (0 > ((int_type)0)-1)
#define SIGNED_INTEGER_MAX(sint_type) \
(sint_type) \
((((sint_type)1) << (sizeof(sint_type) * CHAR_BIT - 2)) | \
((((sint_type)1) << (sizeof(sint_type) * CHAR_BIT - 2)) - 1))
#define SIGNED_INTEGER_MIN(sint_type) (-SIGNED_INTEGER_MAX(sint_type)-1)