build: enable glibc's malloc checks for the test suite Setting MALLOC_CHECK_=3 causes additional checks in glibc for malloc() usage errors, abort()ing the test if those trigger. MALLOC_PERTURB_=69 causes free()'d memory to be poisoned with 0x45, leading to crashes in case of use-after-free. Together, both are useful for spotting more errors during "make check"

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1 files changed, 1 insertions(+), 0 deletions(-)