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LIBC_ERRNO_MODE_SYSTEM to be header-only. (#143187)
This is the first step in preparation for:
https://discourse.llvm.org/t/rfc-make-clang-builtin-math-functions-constexpr-with-llvm-libc-to-support-c-23-constexpr-math-functions/86450
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This is a part of #97655.
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declaration" (#98593)
Reverts llvm/llvm-project#98075
bots are broken
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This is a part of #97655.
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This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
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This patch mostly renames files so it better reflects the function they declare.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D155607
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This is in preparation for the transition to a solution to make libc tests
hermetic with respect to their use of errno. The implementation of strdup
has been switched over to libc_errno as an example of what the code looks
like in the new way.
See #61037 for more information.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D144928
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This patch adds the implementation of the custom operator new functions.
The implementation of the internal strdup has been updated to use
operator new for allocation.
We will make it a policy and document that all allocations have to go
through the libc's own operator new. A future change will also add
operator delete replacements and make it a policy that deallocations in
libc internal code have to go through those replacements.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D139584
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The `strdup` family of functions rely on `malloc` to be implemented.
Its presence in the `string_utils.h` header meant that compiling many of
the string functions relied on `malloc` being implementated as well.
This patch simply moves the implementation into a new file to avoid
including `stdlib.h` from the other string functions. This was a barrier
for compiling string functions for the GPU where there is no malloc
currently.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D138607
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Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D135905
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Up until now, all references to `errno` were marked with `NOLINT`, since
it was technically calling an external function. This fixes the lint
rules so that `errno`, as well as `malloc`, `calloc`, `realloc`, and
`free` are all allowed to be called as external functions. All of the
relevant `NOLINT` comments have been removed, and the documentation has
been updated.
Reviewed By: sivachandra, lntue, aaron.ballman
Differential Revision: https://reviews.llvm.org/D113946
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For example, strcpy does not pull memcpy now.
Reviewed By: gchatelet
Differential Revision: https://reviews.llvm.org/D114300
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Add an implementation for strdup.
Reviewed By: lntue, sivachandra
Differential Revision: https://reviews.llvm.org/D111584
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