GCC and "-fsanitize=memory" ?

[Gordon McConnell]

Hi all,

I've previously used Purify / Valgrind for catching various code defects ; I would love to instead just use one or more of the sanitizers which are available from GCC.  Address Sanitizer does a great job for detecting many of the defect types, but it's not catching 'UMR' (Uninitialized Memory Reads)

I notice that clang has a separate "-fsanitize=memory" option, which does catch these UMR defects, but GCC (even up to the latest 8.3 version) does not support this -  it just reports : unrecognized command line option '-fsanitize=memory'

Is this functionality perhaps provided in GCC but available via some other flag / option, or is it definitely not implemented for GCC ?  If the latter, is there a plan to make it available anytime soon ?

Thanks in advance for any info you can share on this.

Regards,
     Gordon