| commit | b151c7e36a26a4168d0384c88295099e4b6470d0 | [log] [tgz] |
|---|---|---|
| author | Izaak Schroeder <izaak.schroeder@gmail.com> | Sat Jul 06 16:01:59 2024 -0700 |
| committer | GitHub <noreply@github.com> | Sat Jul 06 16:01:59 2024 -0700 |
| tree | 019c1086e9cf472e4bfd66d8730d2fc4459dbff9 | |
| parent | f4e6ddbc2ed77ef73a036408f1d04bb792e2d357 [diff] |
[libc] Add `dlfcn.h` placeholder (#97501) Adds `dlopen` and friends. This is needed as part of the effort to compile `libunwind` + `libc` without baremetal mode. This is part of https://github.com/llvm/llvm-project/issues/97191. This should still be spec compliant, since `dlopen` always returns `NULL` and `dlerror` always returns an error message. > If dlopen() fails for any reason, it returns NULL. > The function dlclose() returns 0 on success, and nonzero on error. > Since the value of the symbol could actually be NULL (so that a NULL return from dlsym() need not indicate an error), the correct way to test for an error is to call dlerror() to clear any old error conditions, then call dlsym(), and then call dlerror() again, saving its return value into a variable, and check whether this saved value is not NULL. See: - https://linux.die.net/man/3/dlopen
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