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Diffstat (limited to 'elf/tst-ifunc-fault-lazy.c')
-rw-r--r-- | elf/tst-ifunc-fault-lazy.c | 57 |
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; +} |