mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 04:01:10 +00:00
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
|
|
foo_v1 (int a)
|
|
{
|
|
return 1;
|
|
}
|
|
asm (".symver foo_v1, foo@v1");
|
|
|
|
int
|
|
foo_v2 (int a)
|
|
{
|
|
return 2;
|
|
}
|
|
asm (".symver foo_v2, foo@v2");
|
|
|
|
int
|
|
foo (int a)
|
|
{
|
|
return 3;
|
|
}
|
|
asm (".symver foo, foo@@@v3");
|