op.c: Factor out common code for potential lv cx

diff --git a/op.c b/op.c
index a25471f..9aef637 100644 (file)
--- a/op.c
+++ b/op.c
@@ -2782,6 +2782,14 @@ S_lvref(pTHX_ OP *o, I32 type)
        o->op_private |= OPpLVREF_ITER;
 }
 
+PERL_STATIC_INLINE bool
+S_potential_mod_type(I32 type)
+{
+    /* Types that only potentially result in modification.  */
+    return type == OP_GREPSTART || type == OP_ENTERSUB
+       || type == OP_REFGEN    || type == OP_LEAVESUBLV;
+}
+
 OP *
 Perl_op_lvalue_flags(pTHX_ OP *o, I32 type, U32 flags)
 {
@@ -2822,9 +2830,7 @@ Perl_op_lvalue_flags(pTHX_ OP *o, I32 type, U32 flags)
        else {                          /* lvalue subroutine call */
            o->op_private |= OPpLVAL_INTRO;
            PL_modcount = RETURN_UNLIMITED_NUMBER;
-           if (type == OP_GREPSTART || type == OP_ENTERSUB
-            || type == OP_REFGEN    || type == OP_LEAVESUBLV) {
-               /* Potential lvalue context: */
+           if (S_potential_mod_type(type)) {
                o->op_private |= OPpENTERSUB_INARGS;
                break;
            }
@@ -2886,8 +2892,7 @@ Perl_op_lvalue_flags(pTHX_ OP *o, I32 type, U32 flags)
       nomod:
        if (flags & OP_LVALUE_NO_CROAK) return NULL;
        /* grep, foreach, subcalls, refgen */
-       if (type == OP_GREPSTART || type == OP_ENTERSUB
-        || type == OP_REFGEN    || type == OP_LEAVESUBLV)
+       if (S_potential_mod_type(type))
            break;
        yyerror(Perl_form(aTHX_ "Can't modify %s in %s",
                     (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL)