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/scope2/test.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 lib/mlibc/tests/rtdl/scope2/test.c (limited to 'lib/mlibc/tests/rtdl/scope2/test.c') diff --git a/lib/mlibc/tests/rtdl/scope2/test.c b/lib/mlibc/tests/rtdl/scope2/test.c new file mode 100644 index 0000000..f4f42dc --- /dev/null +++ b/lib/mlibc/tests/rtdl/scope2/test.c @@ -0,0 +1,36 @@ +#include +#include +#include +#include +#include + +#ifdef USE_HOST_LIBC +#define LIBBAR "libnative-bar.so" +#define LIBBAZ "libnative-baz.so" +#else +#define LIBBAR "libbar.so" +#define LIBBAZ "libbaz.so" +#endif + +typedef char *strfn(void); + +int main() { + void *baz = dlopen(LIBBAZ, RTLD_LAZY | RTLD_GLOBAL); + assert(baz); + + // At this point, baz is loaded in the global scope. When we load bar locally, + // there is a relocation to `foo_baz_conflict` which is defined in both + // foo (which is a dependency of bar), and baz. In this case baz should win + // since we search the global scope first. + + void *bar = dlopen(LIBBAR, RTLD_LAZY | RTLD_LOCAL); + assert(bar); + + strfn *bfn = dlsym(bar, "bar_calls_foo_baz_conflict"); + assert(!strcmp(bfn(), "resolved to baz")); + + // TODO: Test RTLD_DEEPBIND and DT_SYMBOLIC once we implement it. + + dlclose(bar); + dlclose(baz); +} -- cgit v1.2.3