When trying Valgrind I came across some compiling warnings with USE_VALGRIND defined and --enable-cassert not configured. This is mainly because in this case we have MEMORY_CONTEXT_CHECKING defined while USE_ASSERT_CHECKING not defined.
aset.c: In function ‘AllocSetFree’: aset.c:1027:10: warning: unused variable ‘chunk_size’ [-Wunused-variable] Size chunk_size = block->endptr - (char *) pointer; ^ generation.c: In function ‘GenerationFree’: generation.c:633:8: warning: variable ‘chunksize’ set but not used [-Wunused-but-set-variable] Size chunksize; ^