[PATCH v4 2/3] gdb, dwarf: add assert to dwarf2_get_pc_bounds

[Nils-Christian Kempke]

In dwarf2_get_pc_bounds we were writing unchecked to *lowpc.  This
commit adds a gdb_assert to first check that lowpc != nullptr.

Signed-off-by: Nils-Christian Kempke <nils-christian.kempke@intel.com>
---
 gdb/dwarf2/read.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 7ea6c1a7831..456caf364a0 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -13082,6 +13082,7 @@ dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
   if (low == 0 && !per_objfile->per_bfd->has_section_at_zero)
     return PC_BOUNDS_INVALID;
 
+  gdb_assert (lowpc != nullptr);
   *lowpc = low;
   if (highpc != nullptr)
     *highpc = high;
-- 
2.25.1

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