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-rw-r--r--lib/CodeGen/Designator.cc17
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/CodeGen/Designator.cc b/lib/CodeGen/Designator.cc
index a0ffe28..ad0cc49 100644
--- a/lib/CodeGen/Designator.cc
+++ b/lib/CodeGen/Designator.cc
@@ -200,6 +200,15 @@ Value *CodeGen::loadFromLValue(const LValueInfo &LV) {
Value *CodeGen::emitCoercedExpr(ExprAST *E, const TypeInfo *Target) {
if (!E || !Target) return nullptr;
+ // A whole-array reference evaluates to its raw data pointer, and
+ // getExprTypeInfo reports the ELEMENT type for it — both would slip
+ // through the name check and smash the pointer into the target.
+ if (isWholeArrayVar(E)) {
+ reportError("A whole array cannot be used as a value of type %s; index it",
+ Target->Name.c_str());
+ return nullptr;
+ }
+
const TypeInfo *Src = getExprTypeInfo(E);
if (Target->isUserKind()) {
@@ -239,6 +248,14 @@ Value *CodeGen::emitCoercedExpr(ExprAST *E, const TypeInfo *Target) {
return emitExpr(E); // same nominal type: no conversion needed
}
+ // ^x is a raw address: admissible ONLY where a pointer type is expected.
+ // Without this check the ptr would coerce into STRING/BOOLEAN silently.
+ if (dynamic_cast<AddrOfExprAST*>(E)) {
+ reportError("'^' (address-of) can only be used where a pointer type is expected (got %s)",
+ Target->Name.c_str());
+ return nullptr;
+ }
+
if (Src && Src->isUserKind()) {
reportError("Cannot use a value of type %s where %s is expected",
Src->Name.c_str(), Target->Name.c_str());