kaguya
39 lines
922 B
C
39 lines
922 B
C
#include <stddef.h>
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#include <dlfcn.h>
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#include <assert.h>
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#include <string.h>
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#include <stdio.h>
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#ifdef USE_HOST_LIBC
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#define LIBBAR "libnative-bar.so"
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#define LIBBAZ "libnative-baz.so"
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#else
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#define LIBBAR "libbar.so"
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#define LIBBAZ "libbaz.so"
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#endif
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typedef char *strfn(void);
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int main() {
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void *baz = dlopen(LIBBAZ, RTLD_LAZY | RTLD_GLOBAL);
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assert(baz);
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// At this point, baz is loaded in the global scope. When we load bar locally,
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// there is a relocation to `foo_baz_conflict` which is defined in both
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// foo (which is a dependency of bar), and baz. In this case baz should win
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// since we search the global scope first.
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void *bar = dlopen(LIBBAR, RTLD_LAZY | RTLD_LOCAL);
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assert(bar);
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strfn *bfn = dlsym(bar, "bar_calls_foo_baz_conflict");
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assert(!strcmp(bfn(), "resolved to baz"));
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// TODO: Test RTLD_DEEPBIND and DT_SYMBOLIC once we implement it.
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dlclose(bar);
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dlclose(baz);
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return 0;
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}
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