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-rw-r--r--src/rpc/util.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/rpc/util.cpp b/src/rpc/util.cpp
index 54ea352a72..d476feb962 100644
--- a/src/rpc/util.cpp
+++ b/src/rpc/util.cpp
@@ -381,6 +381,9 @@ struct Sections {
std::string ret;
const size_t pad = m_max_pad + 4;
for (const auto& s : m_sections) {
+ // The left part of a section is assumed to be a single line, usually it is the name of the JSON struct or a
+ // brace like {, }, [, or ]
+ CHECK_NONFATAL(s.m_left.find('\n') == std::string::npos);
if (s.m_right.empty()) {
ret += s.m_left;
ret += "\n";