| Issue |
173409
|
| Summary |
[libc] Using `[[gnu::weak]]` declarations generates GOT entries
|
| Labels |
libc
|
| Assignees |
|
| Reporter |
petrhosek
|
Using `[[gnu::weak]]` function declarations as is done in the following places results in GOT entries:
https://github.com/llvm/llvm-project/blob/da98be133e2f15cceb2c3982119490f6cd304eff/libc/src/stdlib/atexit.cpp#L19
https://github.com/llvm/llvm-project/blob/da98be133e2f15cceb2c3982119490f6cd304eff/libc/src/stdlib/atexit.cpp#L30-L31
https://github.com/llvm/llvm-project/blob/da98be133e2f15cceb2c3982119490f6cd304eff/libc/src/stdlib/exit.cpp#L23
https://github.com/llvm/llvm-project/blob/da98be133e2f15cceb2c3982119490f6cd304eff/libc/src/stdlib/exit.cpp#L30-L31
https://github.com/llvm/llvm-project/blob/da98be133e2f15cceb2c3982119490f6cd304eff/libc/src/stdlib/quick_exit.cpp#L19
https://github.com/llvm/llvm-project/blob/da98be133e2f15cceb2c3982119490f6cd304eff/libc/src/stdlib/quick_exit.cpp#L23-L24
This is a problem for baremetal targets which use static linking.
We need to either restructure the code to avoid the use of weak symbols altogether, or provide empty weak definitions.
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