diff options
| author | David Shah <dave@ds0.me> | 2020-04-16 10:27:59 +0100 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2020-04-16 10:30:07 +0100 |
| commit | 4d025058208f3b3096192b09371c9320610a44b8 (patch) | |
| tree | d5900af65a815750662cf7dcec69fb2b6df0b365 /frontends/ast/simplify.cc | |
| parent | 3c4758c60e33386e19049d81fd6f72c8e7f316e0 (diff) | |
| download | yosys-4d025058208f3b3096192b09371c9320610a44b8.tar.gz yosys-4d025058208f3b3096192b09371c9320610a44b8.tar.bz2 yosys-4d025058208f3b3096192b09371c9320610a44b8.zip | |
ast: Fix handling of identifiers in the global scope
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'frontends/ast/simplify.cc')
| -rw-r--r-- | frontends/ast/simplify.cc | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc index cb89f58ba..372dcf95c 100644 --- a/frontends/ast/simplify.cc +++ b/frontends/ast/simplify.cc @@ -1169,7 +1169,8 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, // annotate identifiers using scope resolution and create auto-wires as needed if (type == AST_IDENTIFIER) { if (current_scope.count(str) == 0) { - for (auto node : current_ast_mod->children) { + AstNode *current_scope_ast = (current_ast_mod == nullptr) ? current_ast : current_ast_mod; + for (auto node : current_scope_ast->children) { //log("looking at mod scope child %s\n", type2str(node->type).c_str()); switch (node->type) { case AST_PARAMETER: @@ -1203,7 +1204,9 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, } } if (current_scope.count(str) == 0) { - if (flag_autowire || str == "\\$global_clock") { + if (current_ast_mod == nullptr) { + log_file_error(filename, location.first_line, "Identifier `%s' is implicitly declared outside of a module.\n", str.c_str()); + } else if (flag_autowire || str == "\\$global_clock") { AstNode *auto_wire = new AstNode(AST_AUTOWIRE); auto_wire->str = str; current_ast_mod->children.push_back(auto_wire); |