On Fri, Apr 23, 2021 at 7:25 PM Tom Lane <t...@sss.pgh.pa.us> wrote: > > I'm not sure this is the right way. I would like to know whether there > > is a standard way of testing Postgres code for any unaligned memory > > accesses. Thanks. Any help would be appreciated. > > Per c.h, late-model compilers have options for this: > > * Testing can be done with "-fsanitize=alignment -fsanitize-trap=alignment" > * on clang, or "-fsanitize=alignment -fno-sanitize-recover=alignment" on gcc.
Thanks Tom! I used the above gcc compiler flags to see if they catch memory alignment issues. The way I tested on my dev system (x86_64 platform with Ubuntu OS) was that I commented out max aligning specialSize in PageInit, compiled the source code with and without the alignment flags. make check failed with the alignment checking flags, it passed without the flags. With Regards, Bharath Rupireddy. EnterpriseDB: http://www.enterprisedb.com
