[libc] Disable epoll_create fail test when SYS_epoll_create1 is used internally

[mikhailramalho]

The fail test case only makes sense if SYS_epoll_create is used internally to implement epoll_create, since the only argument to epoll_create (size) is dropped if SYS_epoll_create1 is used.

[llvmbot]

@llvm/pr-subscribers-libc

Author: Mikhail R. Gadelha (mikhailramalho)

Changes

The fail test case only makes sense if SYS_epoll_create is used internally to implement epoll_create, since the only argument to epoll_create (size) is dropped if SYS_epoll_create1 is used.

---

Full diff: https://github.com/llvm/llvm-project/pull/99785.diff

1 Files Affected:

• (modified) libc/test/src/sys/epoll/linux/epoll_create_test.cpp (+3)

diff --git a/libc/test/src/sys/epoll/linux/epoll_create_test.cpp b/libc/test/src/sys/epoll/linux/epoll_create_test.cpp
index fdcdcf8eb4271..9c4bad10c8384 100644
--- a/libc/test/src/sys/epoll/linux/epoll_create_test.cpp
+++ b/libc/test/src/sys/epoll/linux/epoll_create_test.cpp
@@ -10,6 +10,7 @@
 #include "src/unistd/close.h"
 #include "test/UnitTest/ErrnoSetterMatcher.h"
 #include "test/UnitTest/Test.h"
+#include <sys/syscall.h> // For syscall numbers.
 
 using namespace LIBC_NAMESPACE::testing::ErrnoSetterMatcher;
 
@@ -21,6 +22,8 @@ TEST(LlvmLibcEpollCreateTest, Basic) {
   ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds());
 }
 
+#ifdef SYS_epoll_create
 TEST(LlvmLibcEpollCreateTest, Fails) {
   ASSERT_THAT(LIBC_NAMESPACE::epoll_create(0), Fails(EINVAL));
 }
+#endif