ngoto	2017-12-19 00:46:56 +0900 (Tue, 19 Dec 2017)

  New Revision: 61324

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=61324

  Log:
    eval_error.c: Fix compile error on Solaris 10
    
    * eval_error.c (write_warn, write_warn2, write_warn_str): Fix compile
      error "operands have incompatible types" with Oracle Solaris Studio
      12.4 on Solaris 10.

  Modified files:
    trunk/eval_error.c
Index: eval_error.c
===================================================================
--- eval_error.c	(revision 61323)
+++ eval_error.c	(revision 61324)
@@ -6,7 +6,7 @@ https://github.com/ruby/ruby/blob/trunk/eval_error.c#L6
 #ifdef HAVE_BUILTIN___BUILTIN_CONSTANT_P
 #define write_warn(str, x) RB_GNUC_EXTENSION_BLOCK( \
         NIL_P(str) ? \
-            warn_print(x) : ( \
+            warn_print(x) : (void)( \
             (__builtin_constant_p(x)) ? 		\
                 rb_str_concat((str), rb_str_new((x), (long)strlen(x))) : \
                 rb_str_concat((str), rb_str_new2(x)) \
@@ -18,14 +18,14 @@ https://github.com/ruby/ruby/blob/trunk/eval_error.c#L18
 	rb_write_error(x)			\
 )
 #else
-#define write_warn(str, x) NIL_P(str) ? rb_write_error((x)) : rb_str_concat((str), rb_str_new2(x))
+#define write_warn(str, x) NIL_P(str) ? rb_write_error((x)) : (void)rb_str_concat((str), rb_str_new2(x))
 #define warn_print(x) rb_write_error(x)
 #endif
 
-#define write_warn2(str,x,l) NIL_P(str) ? warn_print2(x,l) : rb_str_concat((str), rb_str_new((x),(l)))
+#define write_warn2(str,x,l) NIL_P(str) ? warn_print2(x,l) : (void)rb_str_concat((str), rb_str_new((x),(l)))
 #define warn_print2(x,l) rb_write_error2((x),(l))
 
-#define write_warn_str(str,x) NIL_P(str) ? rb_write_error_str(x) : rb_str_concat((str), (x))
+#define write_warn_str(str,x) NIL_P(str) ? rb_write_error_str(x) : (void)rb_str_concat((str), (x))
 #define warn_print_str(x) rb_write_error_str(x)
 
 static VALUE error_pos_str(void);

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