[PATCH] D121848: [scudo] Remove unused header includes and fix declarations
Dominic Chen via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Mar 28 21:53:51 PDT 2022
ddcc added inline comments.
================
Comment at: compiler-rt/lib/scudo/standalone/wrappers_c.cpp:31-32
// reality the amount of cross pollination between the two is staggering.
SCUDO_REQUIRE_CONSTANT_INITIALIZATION
scudo::Allocator<scudo::Config, SCUDO_PREFIX(malloc_postinit)> SCUDO_ALLOCATOR;
----------------
vitalybuka wrote:
> if we need extern, I assumed there is a some new user outside this cpp file.
> But I don't see benefits of having extern just before the actual var declaration.
>
> I believe correct approach is how it's done in wrappers_c_bionic.cpp.
>
> Separate patch for unrelated stuff will be nice. Actually each of this fixes better to have as a separate patch with "why" in description.
>
The comment above this line seems to suggest that it's not feasible to have separate allocators for C and C++. I did try it and it seemed to work fine locally, but I suspect there may be other issues that haven't yet appeared. For example, what if a heap allocation from the C++ scudo allocator is freed by C code or vice versa?
Repository:
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CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D121848/new/
https://reviews.llvm.org/D121848
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