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-rw-r--r--frontends/ast/genrtlil.cc7
1 files changed, 5 insertions, 2 deletions
diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc
index ab22b865..b8bd2bff 100644
--- a/frontends/ast/genrtlil.cc
+++ b/frontends/ast/genrtlil.cc
@@ -665,9 +665,12 @@ void AstNode::detectSignWidthWorker(int &width_hint, bool &sign_hint)
break;
case AST_MEMRD:
- if (!is_signed)
+ if (!id2ast->is_signed)
sign_hint = false;
- width_hint = std::max(width_hint, current_module->memories.at(str)->width);
+ if (!id2ast->children[0]->range_valid)
+ log_error("Failed to detect with of memory access `%s' at %s:%d!\n", str.c_str(), filename.c_str(), linenum);
+ this_width = id2ast->children[0]->range_left - id2ast->children[0]->range_right + 1;
+ width_hint = std::max(width_hint, this_width);
break;
// everything should have been handled above -> print error if not.