Ignore typedefs in pointer arithmetic codegen.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44529 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CodeGen/CGExprScalar.cpp b/CodeGen/CGExprScalar.cpp
index ab61aac..7639d82 100644
--- a/CodeGen/CGExprScalar.cpp
+++ b/CodeGen/CGExprScalar.cpp
@@ -697,11 +697,11 @@
Value *LHS = Visit(E->getLHS());
Value *RHS = Visit(E->getRHS());
- const PointerType *LHSPtrType = E->getLHS()->getType()->getAsPointerType();
- assert(LHSPtrType == E->getRHS()->getType()->getAsPointerType() &&
- "Can't subtract different pointer types");
+ const QualType LHSType = E->getLHS()->getType().getCanonicalType();
+ const QualType RHSType = E->getRHS()->getType().getCanonicalType();
+ assert(LHSType == RHSType && "Can't subtract different pointer types");
- QualType LHSElementType = LHSPtrType->getPointeeType();
+ QualType LHSElementType = cast<PointerType>(LHSType)->getPointeeType();
uint64_t ElementSize = CGF.getContext().getTypeSize(LHSElementType,
SourceLocation()) / 8;
diff --git a/test/CodeGen/pointer-arithmetic.c b/test/CodeGen/pointer-arithmetic.c
new file mode 100644
index 0000000..6c644c6
--- /dev/null
+++ b/test/CodeGen/pointer-arithmetic.c
@@ -0,0 +1,5 @@
+// RUN: clang -emit-llvm %s
+
+typedef int Int;
+
+int test1(int *a, Int *b) { return a - b; }