Fix rdar://6095136, various crashes with incomplete enum types.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54074 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaStmt.cpp b/lib/Sema/SemaStmt.cpp
index 1462d3d..a4e8946 100644
--- a/lib/Sema/SemaStmt.cpp
+++ b/lib/Sema/SemaStmt.cpp
@@ -25,6 +25,12 @@
Sema::StmtResult Sema::ActOnExprStmt(ExprTy *expr) {
Expr *E = static_cast<Expr*>(expr);
assert(E && "ActOnExprStmt(): missing expression");
+
+ // C99 6.8.3p2: The expression in an expression statement is evaluated as a
+ // void expression for its side effects. Conversion to void allows any
+ // operand, even incomplete types.
+
+ // Same thing in for stmt first clause (when expr) and third clause.
return E;
}
@@ -536,7 +542,7 @@
if (!SecondType->isScalarType()) // C99 6.8.5p2
return Diag(ForLoc, diag::err_typecheck_statement_requires_scalar,
- SecondType.getAsString(), Second->getSourceRange());
+ SecondType.getAsString(), Second->getSourceRange());
}
return new ForStmt(First, Second, Third, Body, ForLoc);
}