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LibC: Use uintptr_t for __stack_chk_guard

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We used size_t, which is a type that is guarenteed to be large
enough to hold an array index, but uintptr_t is designed to be used
to hold pointer values, which is the case of stack guards.
This commit is contained in:
Keegan Saunders 2022-11-26 13:17:32 -05:00 • committed by Andreas Kling
parent 675e5bfdce
commit 89b23c473a
6 changed files with 11 additions and 11 deletions
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Userland/Libraries/LibELF/DynamicLinker.cpp
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@ -258,7 +258,7 @@ static void initialize_libc(DynamicObject& libc)
// This is not done in __libc_init, as we definitely have to return from that, and it might affect Loader as well.
res = libc.lookup_symbol("__stack_chk_guard"sv);
VERIFY(res.has_value());
arc4random_buf(res.value().address.as_ptr(), sizeof(size_t));
arc4random_buf(res.value().address.as_ptr(), sizeof(uintptr_t));
res = libc.lookup_symbol("__environ_is_malloced"sv);
VERIFY(res.has_value());