Only look up to the first require scope for the require propagation workaround

diff --git a/Types.xs b/Types.xs
index 38652141345a6d762c1f27d432b39824ddd8fc6a..324594905e298dee7eae05ceb6a0fa335fa93512 100644 (file)
--- a/Types.xs
+++ b/Types.xs
@@ -91,7 +91,7 @@
 
 typedef struct {
  SV *code;
- UV  requires;
+ IV  cxreq;
 } lt_hint_t;
 
 #define LT_HINT_STRUCT 1
@@ -185,11 +185,11 @@ STATIC void lt_ptable_hints_clone(pTHX_ ptable_ent *ent, void *ud_) {
 
 #if LT_HINT_STRUCT
 
- h2           = PerlMemShared_malloc(sizeof *h2);
- h2->code     = lt_clone(h1->code, ud->owner);
+ h2        = PerlMemShared_malloc(sizeof *h2);
+ h2->code  = lt_clone(h1->code, ud->owner);
  SvREFCNT_inc(h2->code);
 #if LT_WORKAROUND_REQUIRE_PROPAGATION
- h2->requires = h1->requires;
+ h2->cxreq = h1->cxreq;
 #endif
 
 #else /*   LT_HINT_STRUCT */
@@ -223,6 +223,26 @@ STATIC void lt_thread_cleanup(pTHX_ void *ud) {
 
 /* ... Hint tags ........................................................... */
 
+#if LT_WORKAROUND_REQUIRE_PROPAGATION
+STATIC IV lt_require_tag(pTHX) {
+#define lt_require_tag() lt_require_tag(aTHX)
+ const PERL_SI *si;
+
+ for (si = PL_curstackinfo; si; si = si->si_prev) {
+  I32 cxix;
+
+  for (cxix = si->si_cxix; cxix >= 0; --cxix) {
+   const PERL_CONTEXT *cx = si->si_cxstack + cxix;
+
+   if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE)
+    return PTR2IV(cx);
+  }
+ }
+
+ return PTR2IV(NULL);
+}
+#endif /* LT_WORKAROUND_REQUIRE_PROPAGATION */
+
 STATIC SV *lt_tag(pTHX_ SV *value) {
 #define lt_tag(V) lt_tag(aTHX_ (V))
  lt_hint_t *h;
@@ -239,28 +259,10 @@ STATIC SV *lt_tag(pTHX_ SV *value) {
 
 #if LT_HINT_STRUCT
  h = PerlMemShared_malloc(sizeof *h);
- h->code = code;
-
-#if LT_WORKAROUND_REQUIRE_PROPAGATION
- {
-  const PERL_SI *si;
-  I32            requires = 0;
-
-  for (si = PL_curstackinfo; si; si = si->si_prev) {
-   I32 cxix;
-
-   for (cxix = si->si_cxix; cxix >= 0; --cxix) {
-    const PERL_CONTEXT *cx = si->si_cxstack + cxix;
-
-    if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE)
-     ++requires;
-   }
-  }
-
-  h->requires = requires;
- }
-#endif /* LT_WORKAROUND_REQUIRE_PROPAGATION */
-
+ h->code  = code;
+# if LT_WORKAROUND_REQUIRE_PROPAGATION
+ h->cxreq = lt_require_tag();
+# endif /* LT_WORKAROUND_REQUIRE_PROPAGATION */
 #else  /*  LT_HINT_STRUCT */
  h = code;
 #endif /* !LT_HINT_STRUCT */
@@ -287,24 +289,9 @@ STATIC SV *lt_detag(pTHX_ const SV *hint) {
 #if LT_THREADSAFE
  h = ptable_fetch(MY_CXT.tbl, h);
 #endif /* LT_THREADSAFE */
-
 #if LT_WORKAROUND_REQUIRE_PROPAGATION
- {
-  const PERL_SI *si;
-  I32            requires = 0;
-
-  for (si = PL_curstackinfo; si; si = si->si_prev) {
-   I32 cxix;
-
-   for (cxix = si->si_cxix; cxix >= 0; --cxix) {
-    const PERL_CONTEXT *cx = si->si_cxstack + cxix;
-
-    if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE
-                               && ++requires > h->requires)
-     return NULL;
-   }
-  }
- }
+ if (lt_require_tag() != h->cxreq)
+  return NULL;
 #endif /* LT_WORKAROUND_REQUIRE_PROPAGATION */
 
  return LT_HINT_CODE(h);