#include "clang/AST/DeclCXX.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/AST/PrettyPrinter.h"
+#include "clang/AST/CharUnits.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Format.h"
Expr::EvalResult Result;
if (!S->isTypeDependent() && !S->isValueDependent() &&
- S->Evaluate(Result, *Context) && Result.Val.isInt())
- return Result.Val.getInt().getBoolValue();
-
+ S->Evaluate(Result, *Context)) {
+ if (Result.Val.isInt())
+ return Result.Val.getInt().getBoolValue();
+ if (Result.Val.isLValue()) {
+ Expr *e = Result.Val.getLValueBase();
+ const CharUnits &c = Result.Val.getLValueOffset();
+ if (!e && c.isZero())
+ return false;
+ }
+ }
return TryResult();
}
};
return 0;
}
+// PR 8183 - Handle null pointer constants on the left-side of the '&&', and reason about
+// this when determining the reachability of the null pointer dereference on the right side.
+void pr8183(unsigned long long test)
+{
+ (void)((((void*)0)) && (*((unsigned long long*)(((void*)0))) = ((unsigned long long)((test)) % (unsigned long long)((1000000000))))); // no-warning
+ (*((unsigned long long*)(((void*)0))) = ((unsigned long long)((test)) % (unsigned long long)((1000000000)))); // expected-warning {{indirection of non-volatile null pointer will be deleted, not trap}} expected-note {{consider using __builtin_trap() or qualifying pointer with 'volatile'}}
+}
+
// PR1966
_Complex double test1() {
return __extension__ 1.0if;