From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 7 Mar 2024 17:28:00 -0500 Subject: lib: Add mlibc Signed-off-by: Ian Moffett --- lib/mlibc/tests/rtdl/scope5/libfoo.c | 1 + lib/mlibc/tests/rtdl/scope5/meson.build | 5 +++++ lib/mlibc/tests/rtdl/scope5/test.c | 27 +++++++++++++++++++++++++++ 3 files changed, 33 insertions(+) create mode 100644 lib/mlibc/tests/rtdl/scope5/libfoo.c create mode 100644 lib/mlibc/tests/rtdl/scope5/meson.build create mode 100644 lib/mlibc/tests/rtdl/scope5/test.c (limited to 'lib/mlibc/tests/rtdl/scope5') diff --git a/lib/mlibc/tests/rtdl/scope5/libfoo.c b/lib/mlibc/tests/rtdl/scope5/libfoo.c new file mode 100644 index 0000000..85e6cd8 --- /dev/null +++ b/lib/mlibc/tests/rtdl/scope5/libfoo.c @@ -0,0 +1 @@ +void foo() {} diff --git a/lib/mlibc/tests/rtdl/scope5/meson.build b/lib/mlibc/tests/rtdl/scope5/meson.build new file mode 100644 index 0000000..22ade5b --- /dev/null +++ b/lib/mlibc/tests/rtdl/scope5/meson.build @@ -0,0 +1,5 @@ +libfoo = shared_library('foo', 'libfoo.c') +test_link_with = [libfoo] + +libfoo_native = shared_library('native-foo', 'libfoo.c', native: true) +test_native_link_with = [libfoo_native] diff --git a/lib/mlibc/tests/rtdl/scope5/test.c b/lib/mlibc/tests/rtdl/scope5/test.c new file mode 100644 index 0000000..2c11c2e --- /dev/null +++ b/lib/mlibc/tests/rtdl/scope5/test.c @@ -0,0 +1,27 @@ +#include +#include +#include + +#ifdef USE_HOST_LIBC +#define LIBFOO "libnative-foo.so" +#else +#define LIBFOO "libfoo.so" +#endif + +// We need to have a relocation against foo for DT_NEEDED. +void foo(); +void bar() { foo(); } + +int main() { + // In this test, we have exec -> foo (where '->' means 'depends on'). + // This means that foo is in the global scope due to DT_NEEDED. + // We then dlopen it again with RTLD_LOCAL, which should just return + // the already-loaded object, but used to crash in the mlibc linker instead. + + void *foo = dlopen(LIBFOO, RTLD_LOCAL | RTLD_NOW); + assert(foo); + assert(dlsym(foo, "foo")); + assert(dlsym(RTLD_DEFAULT, "foo")); + + dlclose(foo); +} -- cgit v1.2.3