fix(crashpad): preserve UUIDs from minimal PDB70 records

CHANGELOG.md

@@ -14,6 +14,7 @@
 
 - Native: store daemon logs, minidumps, crash envelopes, and scratch files in `.run` directories so they are cleaned up with the run instead of accumulating in the database root. Minidumps can still be retained with `cache_keep`, which stores `.dmp` sidecars alongside cached envelopes. ([#1976](https://github.com/getsentry/sentry-native/pull/1976))
 - Linux/ARM32: prevent recursive crashes when libunwind receives an unmapped initial instruction pointer during crash handling. ([#1977](https://github.com/getsentry/sentry-native/pull/1977))
+- Crashpad/Windows: preserve module CodeView UUIDs for minimal PDB70 records with empty PDB filenames. ([#2003](https://github.com/getsentry/sentry-native/pull/2003))
 
 ## 0.16.3
 

tests/__init__.py

@@ -14,6 +14,15 @@
 sourcedir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
 
 
+def lib_name(name):
+    if sys.platform == "win32":
+        prefix = "lib" if os.environ.get("TEST_MINGW") else ""
+        return prefix + name + ".dll"
+    elif sys.platform == "darwin":
+        return "lib" + name + ".dylib"
+    return "lib" + name + ".so"
+
+
 def adb(*args, **kwargs):
     return subprocess.run(
         ["{}/platform-tools/adb".format(os.environ["ANDROID_HOME"]), *args], **kwargs

tests/assertions.py

@@ -515,6 +515,7 @@ class CrashpadAttachments:
     view_hierarchy: dict
     cmake_cache: int
     bytes_bin: bytes = None
+    minidump: bytes = None
 
 
 def _unpack_breadcrumbs(payload):
@@ -530,6 +531,7 @@ def _load_crashpad_attachments(msg):
     view_hierarchy = {}
     cmake_cache = -1
     bytes_bin = None
+    minidump = None
     for part in msg.walk():
         if part.get_filename() is not None:
             assert part.get("Content-Type") is None
@@ -548,8 +550,20 @@ def _load_crashpad_attachments(msg):
             case "bytes.bin":
                 bytes_bin = part.get_payload(decode=True)
 
+        if (
+            part.get_param("name", header="content-disposition")
+            == "upload_file_minidump"
+        ):
+            minidump = part.get_payload(decode=True)
+
     return CrashpadAttachments(
-        event, breadcrumb1, breadcrumb2, view_hierarchy, cmake_cache, bytes_bin
+        event,
+        breadcrumb1,
+        breadcrumb2,
+        view_hierarchy,
+        cmake_cache,
+        bytes_bin,
+        minidump,
     )
 
 
@@ -593,11 +607,8 @@ def assert_crashpad_upload(req, expect_attachment=False, expect_view_hierarchy=F
         assert attachments.bytes_bin == None
     if expect_view_hierarchy:
         assert_attachment_content_view_hierarchy(attachments.view_hierarchy)
-    assert any(
-        b'name="upload_file_minidump"' in part.as_bytes()
-        and b"\n\nMDMP" in part.as_bytes()
-        for part in msg.walk()
-    )
+    assert attachments.minidump is not None, "minidump attachment missing"
+    assert attachments.minidump.startswith(b"MDMP"), "invalid minidump signature"
     return attachments
 
 

tests/cmake.py

@@ -8,7 +8,7 @@
 
 import pytest
 
-from . import adb
+from . import adb, lib_name
 from .conditions import has_sccache
 from .build_config import (
     get_android_config,
@@ -76,13 +76,6 @@ def destroy(self):
             def exe_name(name):
                 return name + ".exe" if sys.platform == "win32" else name
 
-            def lib_name(name):
-                if sys.platform == "win32":
-                    return name + ".dll"
-                elif sys.platform == "darwin":
-                    return "lib" + name + ".dylib"
-                return "lib" + name + ".so"
-
             for i, (d, _) in enumerate(self.runs.values()):
                 # first merge the raw profiling runs
                 files = [f for f in os.listdir(d) if f.endswith(".profraw")]

tests/test_integration_crashpad.py

@@ -1,4 +1,5 @@
 import os
+import struct
 import subprocess
 import sys
 import time
@@ -17,6 +18,7 @@
     is_logs_envelope,
     is_feedback_envelope,
     is_replay_envelope,
+    lib_name,
     REPLAY_ID,
 )
 from .conditions import has_crashpad, has_oom
@@ -49,6 +51,28 @@
 flushes_state = sys.platform != "darwin"
 
 
+def _minidump_stream(minidump, stream_type):
+    stream_count, directory_rva = struct.unpack_from("<II", minidump, 8)
+    for stream in range(stream_count):
+        stream_offset = directory_rva + stream * 12
+        current_type, size, rva = struct.unpack_from("<III", minidump, stream_offset)
+        if current_type == stream_type:
+            return minidump[rva : rva + size]
+    raise AssertionError(f"stream {stream_type} not found in minidump")
+
+
+def _minidump_modules(minidump):
+    modules = _minidump_stream(minidump, 4)
+    module_count = struct.unpack_from("<I", modules)[0]
+    for module in range(module_count):
+        offset = 4 + module * 108
+        name_rva = struct.unpack_from("<I", modules, offset + 20)[0]
+        name_size = struct.unpack_from("<I", minidump, name_rva)[0]
+        name = minidump[name_rva + 4 : name_rva + 4 + name_size].decode("utf-16-le")
+        record_size, record_rva = struct.unpack_from("<II", modules, offset + 76)
+        yield name, minidump[record_rva : record_rva + record_size]
+
+
 def test_crashpad_capture(cmake, httpserver):
     tmp_path = cmake(["sentry_example"], {"SENTRY_BACKEND": "crashpad"})
 
@@ -64,6 +88,39 @@ def test_crashpad_capture(cmake, httpserver):
     assert len(httpserver.log) == 2
 
 
+def test_crashpad_codeview(cmake, httpserver):
+    tmp_path = cmake(["sentry_example"], {"SENTRY_BACKEND": "crashpad"})
+
+    httpserver.expect_oneshot_request("/api/123456/minidump/").respond_with_data("OK")
+
+    with httpserver.wait(timeout=10) as waiting:
+        run(
+            tmp_path,
+            "sentry_example",
+            ["log", "crashpad-wait-for-upload", "crash"],
+            expect_failure=True,
+            env=dict(os.environ, SENTRY_DSN=make_dsn(httpserver)),
+        )
+
+    assert waiting.result
+    assert len(httpserver.log) == 1
+    attachments = assert_crashpad_upload(httpserver.log[0][0])
+    codeviews = {
+        name.replace("\\", "/").rsplit("/", 1)[-1]: codeview
+        for name, codeview in _minidump_modules(attachments.minidump)
+    }
+    codeview = codeviews[lib_name("sentry")]
+    signature = codeview[:4]
+    if sys.platform == "linux":
+        assert signature == b"LEpB"
+        identifier = codeview[4:]
+    else:
+        assert signature == b"RSDS"
+        identifier = codeview[4:20]
+
+    assert any(identifier)
+
+
 def _setup_crashpad_proxy_test(cmake, httpserver, proxy):
     if proxy:
         proxy_process, port = start_proxy(proxy)