Add Perl_croak_no_modify() to implement Perl_croak("%s", PL_no_modify).

This reduces object code size, reducing CPU cache pressure on the non-exception
paths.

1 files changed, 2 insertions, 2 deletions

diff --git a/mg.c b/mg.c
index 052fee5452..47844e0867 100644
--- a/mg.c
+++ b/mg.c
@@ -635,7 +635,7 @@ Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg)
     PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET;
     PERL_UNUSED_ARG(sv);
     PERL_UNUSED_ARG(mg);
-    Perl_croak(aTHX_ "%s", PL_no_modify);
+    Perl_croak_no_modify(aTHX);
     NORETURN_FUNCTION_END;
 }
 
@@ -2372,7 +2372,7 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
              * set without a previous pattern match. Unless it's C<local $1>
              */
             if (!PL_localizing) {
-                Perl_croak(aTHX_ "%s", PL_no_modify);
+                Perl_croak_no_modify(aTHX);
             }
         }
     case '\001':	/* ^A */