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Valgrind and Postgres

Postgres 9.4 supports Valgrind directly - it is possible to include "client requests" in the memory allocator, providing detection of many additional memory others that would otherwise not be detected in vanilla builds. See src/include/pg_config_manual.h for full details of how to build Postgres with support for Valgrind memcheck instrumentation.

You should normally use MEMORY_CONTEXT_CHECKING with USE_VALGRIND; instrumentation of repalloc() is inferior without it.

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