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-rw-r--r--passes/techmap/abc9.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc
index 7eac08d17..7c764451f 100644
--- a/passes/techmap/abc9.cc
+++ b/passes/techmap/abc9.cc
@@ -471,7 +471,7 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
log_error("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
buffer = stringf("%s/%s", tempdir_name.c_str(), "output.aig");
- ifs.open(buffer);
+ ifs.open(buffer, std::ifstream::binary);
if (ifs.fail())
log_error("Can't open ABC output file `%s'.\n", buffer.c_str());