Valgrind is typically used with binaries from the same Ubuntu release or locally built ones.
Since dwz was enabled by default for Debhelper compat level 12 in 19.04 I suggest not backporting the fix to 18.04. Since the issue was not reported against 19.04 and 19.04 goes EOL soon I suggest not backporting the fix to Disco either.
Valgrind is typically used with binaries from the same Ubuntu release or locally built ones.
Since dwz was enabled by default for Debhelper compat level 12 in 19.04 I suggest not backporting the fix to 18.04. Since the issue was not reported against 19.04 and 19.04 goes EOL soon I suggest not backporting the fix to Disco either.