Test case for problem in libelf with writing out existing ELF file with

different location of the section headers.

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/rdwrmmap.c b/tests/rdwrmmap.c
new file mode 100644
index 00000000..263be0fd
--- /dev/null
+++ b/tests/rdwrmmap.c
@@ -0,0 +1,29 @@
+#include <errno.h>
+#include <error.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <libelf.h>
+
+int
+main (int argc __attribute__ ((unused)), char *argv[])
+{
+  int fd = open (argv[1], O_RDWR);
+  if (fd < 0)
+    error (2, errno, "open: %s", argv[1]);
+
+  if (elf_version (EV_CURRENT) == EV_NONE)
+    error (1, 0, "libelf version mismatch");
+
+  Elf *elf = elf_begin (fd, ELF_C_RDWR_MMAP, NULL);
+  if (elf == NULL)
+    error (1, 0, "elf_begin: %s", elf_errmsg (-1));
+
+  if (elf_update (elf, ELF_C_WRITE) < 0)
+    error (1, 0, "elf_update: %s", elf_errmsg (-1));
+
+  elf_end (elf);
+  close (fd);
+
+  return 0;
+}