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-rw-r--r--backends/smt2/smt2.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/backends/smt2/smt2.cc b/backends/smt2/smt2.cc
index db849882e..081dcda99 100644
--- a/backends/smt2/smt2.cc
+++ b/backends/smt2/smt2.cc
@@ -1476,7 +1476,7 @@ struct Smt2Backend : public Backend {
int indent = 0;
while (indent < GetSize(line) && (line[indent] == ' ' || line[indent] == '\t'))
indent++;
- if (line.substr(indent, 2) == "%%")
+ if (line.compare(indent, 2, "%%") == 0)
break;
*f << line << std::endl;
}