diff options
Diffstat (limited to 'backends/firrtl')
| -rw-r--r-- | backends/firrtl/firrtl.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/backends/firrtl/firrtl.cc b/backends/firrtl/firrtl.cc index e483117d1..d68c52563 100644 --- a/backends/firrtl/firrtl.cc +++ b/backends/firrtl/firrtl.cc @@ -1238,6 +1238,9 @@ struct FirrtlBackend : public Backend { if (top == nullptr) top = last; + if (!top) + log_cmd_error("There is no top module in this design!\n"); + std::string circuitFileinfo = getFileinfo(top); *f << stringf("circuit %s: %s\n", make_id(top->name), circuitFileinfo.c_str()); |