Michael Smith created IMPALA-15379:
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Summary: Undefined VLA size 0 in CodegenEvalConjuncts and
CodegenMaterializeExprs
Key: IMPALA-15379
URL: https://issues.apache.org/jira/browse/IMPALA-15379
Project: IMPALA
Issue Type: Bug
Components: Backend
Reporter: Michael Smith
Creating a variable-length array with size 0 is undefined in C (and VLAs are
only allowed in C++ via GCC/Clang extensions).
ExecNode::CodegenEvalConjuncts and Tuple::CodegenMaterializeExprs both
initialize VLAs that can have an input size of 0, which newer Clang versions
identify in UBSAN builds.
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