case Stmt::CaseStmtClass: {
os << "Control jumps to 'case ";
const auto *Case = cast<CaseStmt>(S);
- const Expr *LHS = Case->getLHS()->IgnoreParenCasts();
+ const Expr *LHS = Case->getLHS()->IgnoreParenImpCasts();
// Determine if it is an enum.
bool GetRawInt = true;
--- /dev/null
+// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -triple x86_64-linux-gnu -Wno-shift-count-overflow -verify %s
+
+#define offsetof(type,memb) ((unsigned long)&((type*)0)->memb)
+
+typedef struct {
+ unsigned long guest_counter;
+ unsigned int guest_fpc;
+} S;
+
+// no crash
+int left_shift_overflow_no_crash(unsigned int i) {
+ unsigned shift = 323U; // expected-note{{'shift' initialized to 323}}
+ switch (i) { // expected-note{{Control jumps to 'case 8:' at line 14}}
+ case offsetof(S, guest_fpc):
+ return 3 << shift; // expected-warning{{The result of the left shift is undefined due to shifting by '323', which is greater or equal to the width of type 'int'}}
+ // expected-note@-1{{The result of the left shift is undefined due to shifting by '323', which is greater or equal to the width of type 'int'}}
+ default:
+ break;
+ }
+
+ return 0;
+}