Don't do integer promotions of LHS for compound shift assignment. The LHS has to be a modifiable lvalue.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44993 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Sema/SemaExpr.cpp b/Sema/SemaExpr.cpp
index c626034..b48703d 100644
--- a/Sema/SemaExpr.cpp
+++ b/Sema/SemaExpr.cpp
@@ -1321,7 +1321,8 @@
// Shifts don't perform usual arithmetic conversions, they just do integer
// promotions on each operand. C99 6.5.7p3
- UsualUnaryConversions(lex);
+ if (!isCompAssign)
+ UsualUnaryConversions(lex);
UsualUnaryConversions(rex);
// "The type of the result is that of the promoted left operand."
diff --git a/test/Sema/shift.c b/test/Sema/shift.c
new file mode 100644
index 0000000..d5ae5c1
--- /dev/null
+++ b/test/Sema/shift.c
@@ -0,0 +1,6 @@
+// RUN: clang -fsyntax-only %s
+
+void test() {
+ char c;
+ c <<= 14;
+}