diff options
| author | Mark Wielaard <mark@klomp.org> | 2019-04-27 23:58:57 +0200 |
|---|---|---|
| committer | Mark Wielaard <mark@klomp.org> | 2019-04-28 00:03:13 +0200 |
| commit | 2b55f157cd74278c0c01e8605de3bbb160d3bde4 (patch) | |
| tree | 67dca1f9a4f48d12a24432917cb37160c47a69b5 /libdw | |
| parent | f8000d58a009379a3c7aa2267d7a473f12ac8be5 (diff) | |
libdw: Reject DW_OP_implicit_value in CFI.
When we encounter a DW_OP_implicit_value we call store_implicit_value ()
which will try to store the value as part of the Dwarf dbg. But if we are
examining CFI there will be no Dwarf dbg. And DW_OP_implicit_value should
not be part of CFI. So explicitly reject it in store_implicit_value if
dbg is NULL.
Signed-off-by: Mark Wielaard <mark@klomp.org>
Diffstat (limited to 'libdw')
| -rw-r--r-- | libdw/ChangeLog | 5 | ||||
| -rw-r--r-- | libdw/dwarf_getlocation.c | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/libdw/ChangeLog b/libdw/ChangeLog index aaa62960..22fdab3d 100644 --- a/libdw/ChangeLog +++ b/libdw/ChangeLog @@ -1,3 +1,8 @@ +2019-04-27 Mark Wielaard <mark@klomp.org> + + * dwarf_getlocation.c (store_implicit_value): Check dbg isn't + NULL. + 2019-02-02 Mark Wielaard <mark@klomp.org> * dwarf_nextcu.c (__libdw_next_unit): Define bytes_end. diff --git a/libdw/dwarf_getlocation.c b/libdw/dwarf_getlocation.c index fc59a2ab..ae3f511e 100644 --- a/libdw/dwarf_getlocation.c +++ b/libdw/dwarf_getlocation.c @@ -125,6 +125,8 @@ loc_compare (const void *p1, const void *p2) static int store_implicit_value (Dwarf *dbg, void **cache, Dwarf_Op *op) { + if (dbg == NULL) + return -1; struct loc_block_s *block = libdw_alloc (dbg, struct loc_block_s, sizeof (struct loc_block_s), 1); const unsigned char *data = (const unsigned char *) (uintptr_t) op->number2; |