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Fix is_diverging_stmt for invalid statements

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This commit is contained in:
gingerBill
2021-03-13 15:01:23 +00:00
parent 4e2a2ac80a
commit 8123ff83a3
1 changed files with 4 additions and 4 deletions
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src/check_stmt.cpp
+4 -4
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@@ -1,4 +1,4 @@
bool is_divigering_stmt(Ast *stmt) {
bool is_diverging_stmt(Ast *stmt) {
if (stmt->kind != Ast_ExprStmt) {
return false;
}
@@ -12,7 +12,7 @@ bool is_divigering_stmt(Ast *stmt) {
}
Type *t = type_of_expr(expr->CallExpr.proc);
t = base_type(t);
return t->kind == Type_Proc && t->Proc.diverging;
return t != nullptr && t->kind == Type_Proc && t->Proc.diverging;
}
void check_stmt_list(CheckerContext *ctx, Slice<Ast *> const &stmts, u32 flags) {
@@ -69,7 +69,7 @@ void check_stmt_list(CheckerContext *ctx, Slice<Ast *> const &stmts, u32 flags)
break;
case Ast_ExprStmt:
if (is_divigering_stmt(n)) {
if (is_diverging_stmt(n)) {
error(n, "Statements after a diverging procedure call are never executed");
}
break;
@@ -86,7 +86,7 @@ bool check_is_terminating_list(Slice<Ast *> const &stmts, String const &label) {
// Okay
} else if (stmt->kind == Ast_ValueDecl && !stmt->ValueDecl.is_mutable) {
// Okay
} else if (is_divigering_stmt(stmt)) {
} else if (is_diverging_stmt(stmt)) {
return true;
} else {
return check_is_terminating(stmt, label);