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Diffstat (limited to 'elf/tst-ifunc-fault-lazy.c')
-rw-r--r--elf/tst-ifunc-fault-lazy.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/elf/tst-ifunc-fault-lazy.c b/elf/tst-ifunc-fault-lazy.c
new file mode 100644
index 0000000000..3389de273f
--- /dev/null
+++ b/elf/tst-ifunc-fault-lazy.c
@@ -0,0 +1,57 @@
+/* Program with local IFUNC resolver which crashes, for testing bug 24214.
+ Copyright (C) 2019 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/>. */
+
+/* The construct below is expected to produce an IRELATIVE relocation
+ with an IFUNC resolver that crashes. ldd should not performs such
+ relocations. */
+
+#include <config.h>
+
+#ifdef HAVE_GCC_IFUNC
+
+# include <stddef.h>
+
+static void
+implementation (void)
+{
+ /* Produce a crash, without depending on any relocations. */
+ volatile char *volatile p = NULL;
+ *p = 0;
+}
+
+static __typeof__ (implementation) *
+resolver (void)
+{
+ /* Produce a crash, without depending on any relocations. */
+ volatile char *volatile p = NULL;
+ *p = 0;
+ return implementation;
+}
+
+static void magic (void) __attribute__ ((ifunc ("resolver")));
+
+void (*magic_ptr) (void) = magic;
+
+#endif /* HAVE_GCC_IFUNC */
+
+/* The program is expected not to run. */
+int
+main (void)
+{
+ return 1;
+}