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fix: prevent Groq message mutation in structured output fallback (#562) #591

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Merged
gltanaka merged 3 commits into from
Feb 24, 2026
Merged

fix: prevent Groq message mutation in structured output fallback (#562) #591

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42cfb47
test: add failing tests for Groq message mutation bug (#562)
Serhan-Asad Feb 24, 2026
7c55764
fix: deep copy formatted_messages to prevent Groq structured output m…
Serhan-Asad Feb 24, 2026
9da828a
test: trim Groq mutation tests to 3 focused regressions in test_llm_i…
Serhan-Asad Feb 24, 2026
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3 changes: 2 additions & 1 deletion pdd/llm_invoke.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# Corrected code_under_test (llm_invoke.py)
# Added optional debugging prints in _select_model_candidates

import copy
import os
import pandas as pd
import litellm
Expand Down Expand Up @@ -1963,7 +1964,7 @@ def calc_strength(candidate):
# --- 5. Prepare LiteLLM Arguments ---
litellm_kwargs: Dict[str, Any] = {
"model": model_name_litellm,
"messages": formatted_messages,
"messages": copy.deepcopy(formatted_messages),
# Use a local adjustable temperature to allow provider-specific fallbacks
"temperature": current_temperature,
# Retry on transient network errors (APIError, TimeoutError, ServiceUnavailableError)
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