[PATCH] D47341: [Sema] Fix infinite typo correction loop.

[Volodymyr Sapsai via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rC335638: [Sema] Fix infinite typo correction loop. (authored 
by vsapsai, committed by ).

Changed prior to commit:
  https://reviews.llvm.org/D47341?vs=148841&id=152924#toc

Repository:
  rC Clang

https://reviews.llvm.org/D47341

Files:
  lib/Sema/SemaExprCXX.cpp
  test/Sema/typo-correction.c


Index: test/Sema/typo-correction.c
===================================================================
--- test/Sema/typo-correction.c
+++ test/Sema/typo-correction.c
@@ -87,3 +87,16 @@
 void overloadable_callexpr(int arg) {
        func_overloadable(ar); //expected-error{{use of undeclared identifier}}
 }
+
+// rdar://problem/38642201
+struct rdar38642201 {
+  int fieldName;
+};
+
+void rdar38642201_callee(int x, int y);
+void rdar38642201_caller() {
+  struct rdar38642201 structVar;
+  rdar38642201_callee(
+      structVar1.fieldName1.member1, //expected-error{{use of undeclared 
identifier 'structVar1'}}
+      structVar2.fieldName2.member2); //expected-error{{use of undeclared 
identifier 'structVar2'}}
+}
Index: lib/Sema/SemaExprCXX.cpp
===================================================================
--- lib/Sema/SemaExprCXX.cpp
+++ lib/Sema/SemaExprCXX.cpp
@@ -7727,12 +7727,8 @@
   if (E && !ExprEvalContexts.empty() && ExprEvalContexts.back().NumTypos &&
       (E->isTypeDependent() || E->isValueDependent() ||
        E->isInstantiationDependent())) {
-    auto TyposInContext = ExprEvalContexts.back().NumTypos;
-    assert(TyposInContext < ~0U && "Recursive call of 
CorrectDelayedTyposInExpr");
-    ExprEvalContexts.back().NumTypos = ~0U;
     auto TyposResolved = DelayedTypos.size();
     auto Result = TransformTypos(*this, InitDecl, Filter).Transform(E);
-    ExprEvalContexts.back().NumTypos = TyposInContext;
     TyposResolved -= DelayedTypos.size();
     if (Result.isInvalid() || Result.get() != E) {
       ExprEvalContexts.back().NumTypos -= TyposResolved;



Index: test/Sema/typo-correction.c
===================================================================
--- test/Sema/typo-correction.c
+++ test/Sema/typo-correction.c
@@ -87,3 +87,16 @@
 void overloadable_callexpr(int arg) {
 	func_overloadable(ar); //expected-error{{use of undeclared identifier}}
 }
+
+// rdar://problem/38642201
+struct rdar38642201 {
+  int fieldName;
+};
+
+void rdar38642201_callee(int x, int y);
+void rdar38642201_caller() {
+  struct rdar38642201 structVar;
+  rdar38642201_callee(
+      structVar1.fieldName1.member1, //expected-error{{use of undeclared identifier 'structVar1'}}
+      structVar2.fieldName2.member2); //expected-error{{use of undeclared identifier 'structVar2'}}
+}
Index: lib/Sema/SemaExprCXX.cpp
===================================================================
--- lib/Sema/SemaExprCXX.cpp
+++ lib/Sema/SemaExprCXX.cpp
@@ -7727,12 +7727,8 @@
   if (E && !ExprEvalContexts.empty() && ExprEvalContexts.back().NumTypos &&
       (E->isTypeDependent() || E->isValueDependent() ||
        E->isInstantiationDependent())) {
-    auto TyposInContext = ExprEvalContexts.back().NumTypos;
-    assert(TyposInContext < ~0U && "Recursive call of CorrectDelayedTyposInExpr");
-    ExprEvalContexts.back().NumTypos = ~0U;
     auto TyposResolved = DelayedTypos.size();
     auto Result = TransformTypos(*this, InitDecl, Filter).Transform(E);
-    ExprEvalContexts.back().NumTypos = TyposInContext;
     TyposResolved -= DelayedTypos.size();
     if (Result.isInvalid() || Result.get() != E) {
       ExprEvalContexts.back().NumTypos -= TyposResolved;

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