PR6905: tweak WILDCARD and RANGE line type for process.statement

* dwflpp.cxx (iterate_over_srcfile_lines): Check the line range
  and tolerate invalid line number for WILDCARD line type.
* testsuite/systemtap.base/bz6905.c: Test case.
* testsuite/systemtap.base/bz6905.exp: Ditto.
* testsuite/systemtap.base/bz6905.stp: Ditto.

1 files changed, 7 insertions, 0 deletions

diff --git a/testsuite/systemtap.base/bz6905.c b/testsuite/systemtap.base/bz6905.c
new file mode 100644
index 00000000..bb3f524e
--- /dev/null
+++ b/testsuite/systemtap.base/bz6905.c
@@ -0,0 +1,7 @@
+int main()
+{
+  int a;
+
+  a = a + 1;
+  return 0;
+}