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| author | Rainer Orth <ro@gcc.gnu.org> | 2024-02-16 11:42:13 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-02-16 11:42:13 +0100 |
| commit | 8c2033719a843a1880427a5e8caa5563248bce78 (patch) | |
| tree | 960fd1e78b6900f5629ac7fe41aa32139cbf8b48 /llvm/docs/CommandGuide | |
| parent | 3b6e25048f188692c27e7788f4e4453a3963306d (diff) | |
| download | llvm-8c2033719a843a1880427a5e8caa5563248bce78.zip llvm-8c2033719a843a1880427a5e8caa5563248bce78.tar.gz llvm-8c2033719a843a1880427a5e8caa5563248bce78.tar.bz2 | |
[asan] Intercept __makecontext_v2 on Solaris/SPARC (#81588)
As detailed in [GCC PR
sanitizer/113785](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113785),
the GCC test `c-c++-common/asan/swapcontext-test-1.c` `FAIL`s on
Solaris/sparc.
This is due to the fact that Solaris 10/SPARC changed the semantics of
`makecontext` so `ucontext_t.uc_stack.ss_sp` refers to the stack base
address. To maintain binary compatiblity, the external name was changed
to `__makecontext_v2`, keeping the old version.
To match this, `__makecontext_v2` needs to be intercepted instead of
`makecontext`.
Tested on GCC trunk on `sparc-sun-solaris2.11`, `i386-pc-solaris2.11`,
and `x86_64-pc-linux-gnu`.
Also tested on the same targets on LLVM `main`. However, this only
proves that Linux/x86_64 isn't broken, since all `makecontext` tests are
Linux-specific.
Diffstat (limited to 'llvm/docs/CommandGuide')
0 files changed, 0 insertions, 0 deletions