ngoto	2017-12-20 01:55:08 +0900 (Wed, 20 Dec 2017)

  New Revision: 61344

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=61344

  Log:
    Workaround for optimization bug of Oracle Developer Studio 12.4-12.6
    
    * pack.c (pack_unpack, AVOID_CC_BUG): Very ugly workaround for
      optimization bug of Oracle Developer Studio (Oracle Solaris Studio)
      12.4, 12.5, and 12.6 on Solaris 10 with -xO4 optimization option.
      [Bug #11684] [ruby-core:84351]

  Modified files:
    trunk/pack.c
Index: pack.c
===================================================================
--- pack.c	(revision 61343)
+++ pack.c	(revision 61344)
@@ -1011,10 +1011,11 @@ hex2num(char c) https://github.com/ruby/ruby/blob/trunk/pack.c#L1011
 	rb_ary_store(ary, RARRAY_LEN(ary)+tmp_len-1, Qnil); \
 } while (0)
 
-/* Workaround for Oracle Solaris Studio 12.4/12.5 C compiler optimization bug
+/* Workaround for Oracle Developer Studio (Oracle Solaris Studio)
+ * 12.4/12.5/12.6 C compiler optimization bug
  * with "-xO4" optimization option.
  */
-#if defined(__SUNPRO_C) && 0x5130 <= __SUNPRO_C && __SUNPRO_C <= 0x5140
+#if defined(__SUNPRO_C) && 0x5130 <= __SUNPRO_C && __SUNPRO_C <= 0x5150
 # define AVOID_CC_BUG volatile
 #else
 # define AVOID_CC_BUG

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