backend: allow non-intrusive config_read_array() for #9786
When config keys are not found or are not arrays that should
be especially for iterating with foreach we do a trick here
by returning a detached empty array to avoid upper layer
errors, forcing empty arrays into $config yet reading and
removal still work fine. The default stays the "insert" mode,
which can be triggered explicitly just for symmetry. Bools
are not in the keys so this is perfectly fine.
The function was added in 4c179c23 in 2017 and hasn't been
modified since which is quite the achievement IMO. It's
had a clear purpose but now we make it just a little bit
better. :)
Look for more references at least in the legacy pages:
# git grep 'foreach.($config\[' src/www
[libc++] Refactor std::push_heap benchmark (#181343)
We're trying to get the time it takes to run all the benchmarks down, so
that we can run them on a regular basis. This patch saves us ~8 minutes
per run.
Fixes #177028
Reapply "[msan] Switch switch() from strict handling to (icmp eq)-style handling" (#180636) (#181112)
This reverts https://github.com/llvm/llvm-project/pull/180636 i.e.,
relands https://github.com/llvm/llvm-project/pull/179851.
It was originally reverted because of buildbot failures. When compiling
switch statements with many cases (e.g., AMDGPUGenMCCodeEmitter.inc has
>30,000 cases), MSan's instrumentation created an extremely long chained
expression for the shadow computation. Although that was legal LLVM IR,
it caused the subsequent JumpThreadingPass to have a stack overflow.
This reland avoids the issue by limiting the number of cases considered
(`-msan-switch-precision`), with the tradeoff of niche false negatives
(only in the case where the condition is partly uninitialized and the
first x cases still have a defined comparison, but a case # > x does not
have a fully-defined comparison).
This reland also adds some TODOs for possible improvements.
[39 lines not shown]
tr: fix class handling in unicode world
toupper/tolower logic was only handled for CCLASS_TOUPPER and
CCLASS_TOLOWER, add support for CCLASS ([:alpha:])
PR: 219900
MFC After: 1 week
tr: fix class handling in unicode world
toupper/tolower logic was only handled for CCLASS_TOUPPER and
CCLASS_TOLOWER, add support for CCLASS ([:alpha:])
PR: 219900
MFC After: 1 week
