ldso: Initialize fully dtv before calling the constructors.

If a shared object has a constructor that accesses a TLS variable
using the localor global synamic access model (that is by calling
the __tls_get_addr function), all the filed of each dtv entry must be
already initialized to point to the right address in the TLS static block

Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/test/tls/tst-tls16.c b/test/tls/tst-tls16.c
new file mode 100644
index 000000000..53aece181
--- /dev/null
+++ b/test/tls/tst-tls16.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <tls.h>
+
+#define TLS_VAR_INIT_VALUE 99
+
+#ifdef USE_TLS
+extern __thread int tls_var;
+#endif
+
+int main(void)
+{
+	int ret = EXIT_SUCCESS;
+#ifdef USE_TLS
+	if (tls_var != TLS_VAR_INIT_VALUE) {
+		printf("tls_var = %d - Expected value = %d\n", tls_var, TLS_VAR_INIT_VALUE);
+		ret = EXIT_FAILURE;
+	}
+#endif
+	return ret;
+}