Fix stacktraces for binaries without debug symbols

docker/test/fasttest/run.sh

@@ -211,6 +211,17 @@ function build
         echo "build_clickhouse_fasttest_binary: [ OK ] $BUILD_SECONDS_ELAPSED sec." \
           | ts '%Y-%m-%d %H:%M:%S' \
           | tee "$FASTTEST_OUTPUT/test_result.txt"
+
+        (
+            # This query should fail, and print stacktrace with proper symbol names (even on a stripped binary)
+            clickhouse_output=$(programs/clickhouse-stripped --stacktrace -q 'select' 2>&1 || :)
+            if [[ $clickhouse_output =~ DB::LocalServer::main ]]; then
+                echo "stripped_clickhouse_shows_symbols_names: [ OK ] 0 sec."
+            else
+                echo -e "stripped_clickhouse_shows_symbols_names: [ FAIL ] 0 sec. - clickhouse output:\n\n$clickhouse_output\n"
+            fi
+        ) | ts '%Y-%m-%d %H:%M:%S' | tee -a "$FASTTEST_OUTPUT/test_result.txt"
+
         if [ "$COPY_CLICKHOUSE_BINARY_TO_OUTPUT" -eq "1" ]; then
             mkdir -p "$FASTTEST_OUTPUT/binaries/"
             cp programs/clickhouse "$FASTTEST_OUTPUT/binaries/clickhouse"

src/Common/StackTrace.cpp

@@ -317,16 +317,19 @@ constexpr std::pair<std::string_view, std::string_view> replacements[]
 // Demangle @c symbol_name if it's not from __functional header (as such functions don't provide any useful
 // information but pollute stack traces).
 // Replace parts from @c replacements with shorter aliases
-String demangleAndCollapseNames(std::string_view file, const char * const symbol_name)
+String demangleAndCollapseNames(std::optional<std::string_view> file, const char * const symbol_name)
 {
     if (!symbol_name)
         return "?";
 
-    std::string_view file_copy = file;
-    if (auto trim_pos = file.find_last_of('/'); trim_pos != file.npos)
-        file_copy.remove_suffix(file.size() - trim_pos);
-    if (file_copy.ends_with("functional"))
-        return "?";
+    if (file.has_value())
+    {
+        std::string_view file_copy = file.value();
+        if (auto trim_pos = file_copy.find_last_of('/'); trim_pos != file_copy.npos)
+            file_copy.remove_suffix(file_copy.size() - trim_pos);
+        if (file_copy.ends_with("functional"))
+            return "?";
+    }
 
     String haystack = demangle(symbol_name);
 
@@ -393,8 +396,8 @@ toStringEveryLineImpl([[maybe_unused]] bool fatal, const StackTraceRefTriple & s
         if (frame.file.has_value() && frame.line.has_value())
             out << *frame.file << ':' << *frame.line << ": ";
 
-        if (frame.symbol.has_value() && frame.file.has_value())
-            out << demangleAndCollapseNames(*frame.file, frame.symbol->data());
+        if (frame.symbol.has_value())
+            out << demangleAndCollapseNames(frame.file, frame.symbol->data());
         else
             out << "?";