From 3d3316b1dee885153d44210b2e95dba68d00613a Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Tue, 10 Nov 2020 23:35:19 +0000 Subject: hurd: keep only required PLTs in ld.so We need NO_RTLD_HIDDEN because of the need for PLT calls in ld.so. See Roland's comment in https://sourceware.org/bugzilla/show_bug.cgi?id=15605 "in the Hurd it's crucial that calls like __mmap be the libc ones instead of the rtld-local ones after the bootstrap phase, when the dynamic linker is being used for dlopen and the like." We used to just avoid all hidden use in the rtld ; this commit switches to keeping only those that should use PLT calls, i.e. essentially those defined in sysdeps/mach/hurd/dl-sysdep.c: __assert_fail __assert_perror_fail __*stat64 _exit This fixes a few startup issues, notably the call to __tunable_get_val that is made before PLTs are set up. --- include/libc-symbols.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/libc-symbols.h') diff --git a/include/libc-symbols.h b/include/libc-symbols.h index 60153bb50d..b8103b98bb 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -643,7 +643,7 @@ for linking") # define libc_hidden_data_ver(local, name) #endif -#if IS_IN (rtld) && !defined NO_RTLD_HIDDEN +#if IS_IN (rtld) # define rtld_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) # define rtld_hidden_tls_proto(name, attrs...) hidden_tls_proto (name, ##attrs) # define rtld_hidden_def(name) hidden_def (name) -- cgit 1.4.1