Make sure CodeGen uses a value of the correct type as the result of

of assignment to a bool bitfield.  PR14638.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170480 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index a36d4ee9f8deaea866a8899892e19050610aad66..8440eded8399e5874f8abb42de68faa0b2520a8a 100644 (file)
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -1401,7 +1401,7 @@ void CodeGenFunction::EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst,
 
     ResultVal = Builder.CreateIntCast(ResultVal, ResLTy, Info.IsSigned,
                                       "bf.result.cast");
-    *Result = ResultVal;
+    *Result = EmitFromMemory(ResultVal, Dst.getType());
   }
 }
 

diff --git a/test/CodeGenCXX/bool-bitfield.cpp b/test/CodeGenCXX/bool-bitfield.cpp
new file mode 100644 (file)
index 0000000..06bdf2b
--- /dev/null
+++ b/test/CodeGenCXX/bool-bitfield.cpp
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -verify -emit-llvm -o - %s \
+// RUN:   | FileCheck %s
+
+// PR14638; make sure this doesn't crash.
+struct A {
+    bool m_sorted : 1;
+};
+void func1(bool b, A& a1)
+{
+    if ((a1.m_sorted = b)) {}
+}
+// CHECK: define void @_Z5func1bR1A
+// CHECK: br i1
+// CHECK: ret void