Given that we have already explicitly stated in the qualifier that the
expression is __unaligned, it makes little sense to diagnose that the address
of the packed member may not be aligned.
Differential Revision: https://reviews.llvm.org/D30884
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@297620
91177308-0d34-0410-b5e6-
96231b3b80d8
if (!ME)
return;
+ // No need to check expressions with an __unaligned-qualified type.
+ if (E->getType().getQualifiers().hasUnaligned())
+ return;
+
// For a chain of MemberExpr like "a.b.c.d" this list
// will keep FieldDecl's like [d, c, b].
SmallVector<FieldDecl *, 4> ReverseMemberChain;
--- /dev/null
+// RUN: %clang_cc1 -fsyntax-only -fms-extensions -verify %s
+// expected-no-diagnostics
+
+typedef
+struct __attribute__((packed)) S1 {
+ char c0;
+ int x;
+ char c1;
+} S1;
+
+void bar(__unaligned int *);
+
+void foo(__unaligned S1* s1)
+{
+ bar(&s1->x);
+}