ruby.h: add mark to PRIsVALUE

* include/ruby/ruby.h (PRIsVALUE), vsnprintf.c (BSD_vfprintf): add
  RUBY_PRI_VALUE_MARK to reduce danger of accidental conflict with
  plain "%i".  binary incompatible with extension libraries using
  PRIsVALUE and built for 2.1 and earlier.  [EXPERIMENTAL]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48262 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/sprintf.c b/sprintf.c
index 85adc216f3..d370b8d8de 100644
--- a/sprintf.c
+++ b/sprintf.c
@@ -1253,6 +1253,9 @@ fmt_setup(char *buf, size_t size, int c, int flags, int width, int prec)
 #define FLOATING_POINT 1
 #define BSD__dtoa ruby_dtoa
 #define BSD__hdtoa ruby_hdtoa
+#ifdef RUBY_PRI_VALUE_MARK
+# define PRI_EXTRA_MARK RUBY_PRI_VALUE_MARK
+#endif
 #include "vsnprintf.c"
 
 typedef struct {