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efa7936e4c
When the first object providing foo defines both foo@v1 and foo@@v2, dlsym(RTLD_NEXT, "foo") returns foo@v1 while dlsym(RTLD_DEFAULT, "foo") returns foo@@v2. The issue is that RTLD_DEFAULT uses the DL_LOOKUP_RETURN_NEWEST flag while RTLD_NEXT doesn't. Fix the RTLD_NEXT branch to use DL_LOOKUP_RETURN_NEWEST. Note: the new behavior matches FreeBSD rtld. Future sanitizers will not need to add versioned interceptors like https://reviews.llvm.org/D96348 Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
21 lines
199 B
C
21 lines
199 B
C
int
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foo_v1 (int a)
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{
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return 1;
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}
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asm (".symver foo_v1, foo@v1");
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int
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foo_v2 (int a)
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{
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return 2;
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}
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asm (".symver foo_v2, foo@v2");
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int
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foo (int a)
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{
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return 3;
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}
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asm (".symver foo, foo@@@v3");
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