Commit: a7d538fddb21427681704e027e2fdea2bed686c7 - uclibc-ng (git)

Commit MetaInfo

• Revision: a7d538fddb21427681704e027e2fdea2bed686c7 (tree)
• Zeit: 2018-08-10 23:02:45
• Autor: Christophe Lyon <christophe.lyon@st.c...>
• Commiter: Waldemar Brodkorb

Log Message

nptl threads: Fix bug in using a weak variable.

In case nptl_nthreads is not defined in the final binary then avoid
dereferencing the address since it's null. Anyway this means there is
no other thread and so we must exit.

* libc/misc/internals/uClibc_main.c (uClibc_main): Handle case
where &nptl_nthreads is null.

Signed-off-by: Mickaël Guêné <[e-mail]>
Signed-off-by: Christophe Lyon <[e-mail]>

Ändern Zusammenfassung

• modified: libc/misc/internals/__uClibc_main.c

Diff

--- a/libc/misc/internals/__uClibc_main.c
+++ b/libc/misc/internals/__uClibc_main.c
@@ -544,7 +544,7 @@ void __uClibc_main(int (*main)(int, char **, char **), int argc,
 		result = 0;
 		unsigned int *const ptr = &__nptl_nthreads;
 
-		if (! atomic_decrement_and_test (ptr))
+		if (ptr && ! atomic_decrement_and_test (ptr))
 			/* Not much left to do but to exit the thread, not the process.  */
 			__exit_thread_inline (0);
 	}