DWARF: Fix debug_abbrev section (#2630)

Each compilation unit's abbreviations must be terminated by
a zero, so that we use the right abbreviations. This adds that
support to the YAML layer, both adding the zeros and parsing
them to look in the right abbreviation section at the right time.

Also add two large testcases, zlib and cubescript, which
crash without this and the last PR.

1 files changed, 16 insertions, 0 deletions

diff --git a/test/unit/test_dwarf.py b/test/unit/test_dwarf.py
new file mode 100644
index 000000000..5078efeeb
--- /dev/null
+++ b/test/unit/test_dwarf.py
@@ -0,0 +1,16 @@
+import os
+
+from scripts.test import shared
+from . import utils
+
+
+class DWARFTest(utils.BinaryenTestCase):
+    def test_no_crash(self):
+        # run dwarf processing on some interesting large files, too big to be
+        # worth putting in passes where the text output would be massive. We
+        # just check that no assertion are hit.
+        path = self.input_path('dwarf')
+        for name in os.listdir(path):
+            args = [os.path.join(path, name)] + \
+                   ['-g', '--dwarfdump', '--roundtrip', '--dwarfdump']
+            shared.run_process(shared.WASM_OPT + args, capture_output=True)