fix: avoid crash by setting default index constraint type#508
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staticlibs merged 1 commit intoJul 9, 2026
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This is a backport of the PR #508 to `v1.5-variegata` stable branch. Resolves #507 `duckdb_indexes()` scanning an attached Postgres catalog can crash with an internal assertion: ```text INTERNAL Error: Assertion triggered in file "duckdb/src/parser/parsed_data/create_index_info.cpp" on line 65: constraint_type == IndexConstraintType::UNIQUE || constraint_type == IndexConstraintType::NONE ``` `PostgresIndexSet::LoadEntries` constructs a `CreateIndexInfo` for every Postgres index then lazily loads into the catalog. But it doesn't assign `constraint_type`. Since the field has no default it ends up being whatever garbage memory that happens to be sitting at the address at the time, which then flows straight into the catalog entry. Anything that later calls `ToSQL()`/`ToString()` on it asserts if the value isn't `UNIQUE` or `NONE`. That then causes a crash in some scenario Explicitly initializing `constraint_type` to `NONE` right where the entry is built, the same place every other field on `info` is already set ```cpp CreateIndexInfo info; info.constraint_type = IndexConstraintType::NONE; info.SetQualifiedName(...); ```
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Resolves #507
Problem
duckdb_indexes()scanning an attached Postgres catalog can crash with an internal assertion:PostgresIndexSet::LoadEntriesconstructs aCreateIndexInfofor every Postgres index then lazily loads into the catalog. But it doesn't assignconstraint_type. Since the field has no default it ends up being whatever garbage memory that happens to be sitting at the address at the time, which then flows straight into the catalog entry. Anything that later callsToSQL()/ToString()on it asserts if the value isn'tUNIQUEorNONE. That then causes a crash in some scenarioFix
Explicitly initializing
constraint_typetoNONEright where the entry is built, the same place every other field oninfois already setCreateIndexInfo info; info.constraint_type = IndexConstraintType::NONE; info.SetQualifiedName(...);