[uclibc-ng-devel] [PATCH] Fix TLS allocation and loading in !SHARED case

For ARCH where shared lib are not supported: - SHARED is not set (!SHARED is true) - __ARCH_HAS_NO_LDSO__ is set so code inside #if !defined __ARCH_HAS_NO_LDSO__ && !defined SHARED is compiled-out. But without a call do _dl_aux_init(), _dl_phdr stays NULL and __libc_setup_tls won't be able to allocate memory for the in-executable TLS and also won't be able to load the initimage from ELF TLS segment. This results in segfault when doing things like "errno = 0" like in tst-cancel15.c for instance in uClibc-ng testsuite. Signed-off-by: Yann Sionneau <ysionneau(a)kalray.eu> --- libc/misc/internals/__uClibc_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libc/misc/internals/__uClibc_main.c b/libc/misc/internals/__uClibc_main.c index 849bca8..affa0ce 100644 --- a/libc/misc/internals/__uClibc_main.c +++ b/libc/misc/internals/__uClibc_main.c @@ -370,7 +370,7 @@ void __uClibc_main(int (*main)(int, char **, char **), int argc, char **argv, void (*app_init)(void), void (*app_fini)(void), void (*rtld_fini)(void), void *stack_end attribute_unused) { -#if !defined __ARCH_HAS_NO_LDSO__ && !defined SHARED +#ifndef SHARED unsigned long *aux_dat; ElfW(auxv_t) auxvt[AT_EGID + 1]; #endif @@ -396,7 +396,7 @@ void __uClibc_main(int (*main)(int, char **, char **), int argc, __environ = &argv[argc]; } -#if !defined __ARCH_HAS_NO_LDSO__ && !defined SHARED +#ifndef SHARED /* Pull stuff from the ELF header when possible */ memset(auxvt, 0x00, sizeof(auxvt)); aux_dat = (unsigned long*)__environ; -- 1.8.3.1