diff options
Diffstat (limited to 'elf/tst-recursive-tls.c')
-rw-r--r-- | elf/tst-recursive-tls.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/elf/tst-recursive-tls.c b/elf/tst-recursive-tls.c new file mode 100644 index 0000000000..716d1f783a --- /dev/null +++ b/elf/tst-recursive-tls.c @@ -0,0 +1,60 @@ +/* Test with interposed malloc with dynamic TLS. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <array_length.h> +#include <stdio.h> +#include <support/check.h> +#include <support/xdlfcn.h> + +/* Defined in tst-recursive-tlsmallocmod.so. */ +extern __thread unsigned int malloc_subsytem_counter; + +static int +do_test (void) +{ + /* 16 is large enough to exercise the DTV resizing case. */ + void *handles[16]; + + for (unsigned int i = 0; i < array_length (handles); ++i) + { + /* Re-use the TLS slot for module 0. */ + if (i > 0) + xdlclose (handles[0]); + + char soname[30]; + snprintf (soname, sizeof (soname), "tst-recursive-tlsmod%u.so", i); + handles[i] = xdlopen (soname, RTLD_NOW); + + if (i > 0) + { + handles[0] = xdlopen ("tst-recursive-tlsmod0.so", RTLD_NOW); + int (*fptr) (void) = xdlsym (handles[0], "get_threadvar_0"); + /* May trigger TLS storage allocation using malloc. */ + TEST_COMPARE (fptr (), 0); + } + } + + for (unsigned int i = 0; i < array_length (handles); ++i) + xdlclose (handles[i]); + + printf ("info: malloc subsystem calls: %u\n", malloc_subsytem_counter); + TEST_VERIFY (malloc_subsytem_counter > 0); + return 0; +} + +#include <support/test-driver.c> |