Don't crash during constant-evaluation of 1/(1/0). PR9262.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126541 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index 656bb99..3a5eb66 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -2926,7 +2926,7 @@
Exp->getOpcode() == BO_Rem) {
// Evaluate gives an error for undefined Div/Rem, so make sure
// we don't evaluate one.
- if (LHSResult.Val != 2 && RHSResult.Val != 2) {
+ if (LHSResult.Val == 0 && RHSResult.Val == 0) {
llvm::APSInt REval = Exp->getRHS()->EvaluateAsInt(Ctx);
if (REval == 0)
return ICEDiag(1, E->getLocStart());
diff --git a/test/Sema/i-c-e.c b/test/Sema/i-c-e.c
index d0a6c52..4d7007c 100644
--- a/test/Sema/i-c-e.c
+++ b/test/Sema/i-c-e.c
@@ -66,6 +66,8 @@
int illegaldiv2[1/0]; // expected-error {{variable length array declaration not allowed at file scope}} \
// expected-warning {{division by zero is undefined}}
int illegaldiv3[INT_MIN / -1]; // expected-error {{variable length array declaration not allowed at file scope}}
+// PR9262
+int illegaldiv4[0 / (1 / 0)]; // expected-warning {{division by zero is undefined}} expected-error {{variable length array declaration not allowed at file scope}}
int chooseexpr[__builtin_choose_expr(1, 1, expr)];
int realop[(__real__ 4) == 4 ? 1 : -1];