cxxrtl: fix handling of 0-bit variables in vcd_writer.sample().

YosysHQ · Oct 13, 2024 · f953a51 · f953a51
1 parent 0f762f7
commit f953a51
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/backends/cxxrtl/runtime/cxxrtl/cxxrtl_vcd.h b/backends/cxxrtl/runtime/cxxrtl/cxxrtl_vcd.h
@@ -127,6 +127,8 @@ class vcd_writer {
 			bool bit_curr = var.curr[bit / (8 * sizeof(chunk_t))] & (1 << (bit % (8 * sizeof(chunk_t))));
 			buffer += (bit_curr ? '1' : '0');
 		}
+		if (var.width == 0)
+			buffer += '0';
 		buffer += ' ';
 		emit_ident(var.ident);
 		buffer += '\n';