get rid of function calls in RSTRING_PTR

* process.c (rlimit_resource_type, rlimit_resource_value): get rid
  of function calls in RSTRING_PTR(), as it evaluates the argument
  twice.

* re.c (match_backref_number): ditto.

* signal.c (esignal_init, rb_f_kill, trap_signm): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47006 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 2 deletions

diff --git a/process.c b/process.c
index e9d1b0638f..bcccddcdcd 100644
--- a/process.c
+++ b/process.c
@@ -4529,7 +4529,8 @@ rlimit_resource_type(VALUE rtype)
 
     switch (TYPE(rtype)) {
       case T_SYMBOL:
-        name = RSTRING_PTR(rb_sym2str(rtype));
+	v = rb_sym2str(rtype);
+	name = RSTRING_PTR(v);
         break;
 
       default:
@@ -4564,7 +4565,8 @@ rlimit_resource_value(VALUE rval)
 
     switch (TYPE(rval)) {
       case T_SYMBOL:
-        name = RSTRING_PTR(rb_sym2str(rval));
+	v = rb_sym2str(rval);
+	name = RSTRING_PTR(v);
         break;
 
       default: