platform_external_elfutils/tests/get-units-invalid.c, branch master

libdw: Check validity of dwarf_getabbrev arguments.

2018-06-11T06:35:51+00:00

When the given Dwarf_Die was invalid we might crash and when the offset
was totally bogus we might succeed with a random abbrev.

Signed-off-by: Mark Wielaard

libdw: Don't crash on invalid die in dwarf_dieoffset.

2018-05-31T17:48:00+00:00

Add explicit test in get-units-invalid for dwarf_cuoffset and
dwarf_dieoffset. Make sure dwarf_dieoffset returns (Dwarf_Off) -1
on failure.

Signed-off-by: Mark Wielaard

libdw: Initialize ranges_base, add invalid DWARF test and fix expected output.

2018-05-24T13:20:25+00:00

We never initialized the CU ranges_base, which meant we didn't actually
calculate it correctly. This caused bad ranges on some DIEs. The expected
output in the testcase was wrong. We also crashed on invalid dwarf.

Signed-off-by: Mark Wielaard

libdw: Fix crashing on illegal/zero Dwarf_Die.

2018-05-15T09:25:03+00:00

In some cases we create an illegal Dwarf_Die by clearing all fields.
The idea is that dwarf_tag () on such a Dwarf_Die will return
DW_TAG_invalid, to indicate that the Dwarf_Die is unusable (and other
functions will also return errors).  But when "reconstructing" the
Dwarf_Die addr we might use the cu before realizing the Dwarf_Die is
invalid.  Fix this with an explicit NULL check and add a testcase.

Signed-off-by: Mark Wielaard