disable WARN and DIE hooks during constant folding

[perl5.git] / op.c

diff --git a/op.c b/op.c
index 1421e05..f5e24fc 100644 (file)
--- a/op.c
+++ b/op.c
@@ -2135,6 +2135,8 @@ Perl_fold_constants(pTHX_ register OP *o)
     int ret = 0;
     I32 oldscope;
     OP *old_next;
+    SV * const oldwarnhook = PL_warnhook;
+    SV * const olddiehook  = PL_diehook;
     dJMPENV;
 
     if (PL_opargs[type] & OA_RETSCALAR)
@@ -2196,6 +2198,8 @@ Perl_fold_constants(pTHX_ register OP *o)
     oldscope = PL_scopestack_ix;
     create_eval_scope(G_FAKINGEVAL);
 
+    PL_warnhook = PERL_WARNHOOK_FATAL;
+    PL_diehook  = NULL;
     JMPENV_PUSH(ret);
 
     switch (ret) {
@@ -2209,11 +2213,6 @@ Perl_fold_constants(pTHX_ register OP *o)
            SvTEMP_off(sv);
        }
        break;
-    case 2:
-       /* my_exit() was called; propagate it */
-       JMPENV_POP;
-       JMPENV_JUMP(2);
-       /* NOTREACHED */
     case 3:
        /* Something tried to die.  Abandon constant folding.  */
        /* Pretend the error never happened.  */
@@ -2222,11 +2221,16 @@ Perl_fold_constants(pTHX_ register OP *o)
        break;
     default:
        JMPENV_POP;
-       /* Don't expect 1 (setjmp failed) */
+       /* Don't expect 1 (setjmp failed) or 2 (something called my_exit)  */
+       PL_warnhook = oldwarnhook;
+       PL_diehook  = olddiehook;
+       /* XXX note that this croak may fail as we've already blown away
+        * the stack - eg any nested evals */
        Perl_croak(aTHX_ "panic: fold_constants JMPENV_PUSH returned %d", ret);
     }
-
     JMPENV_POP;
+    PL_warnhook = oldwarnhook;
+    PL_diehook  = olddiehook;
 
     if (PL_scopestack_ix > oldscope)
        delete_eval_scope();