Merge branch 'master' into maps

BUILD

@@ -43,6 +43,11 @@ config_setting(
     visibility = ["//visibility:public"],
 )
 
+config_setting(
+    name = "fuzz",
+    values = {"define": "fuzz=true"},
+)
+
 # Public C/C++ libraries #######################################################
 
 cc_library(
@@ -356,6 +361,25 @@ cc_test(
     ],
 )
 
+# OSS-Fuzz test
+cc_binary(
+    testonly = 1,
+    name = "file_descriptor_parsenew_fuzzer",
+    srcs = ["tests/file_descriptor_parsenew_fuzzer.cc"],
+    copts = CPPOPTS + select({
+        "//conditions:default": [],
+        ":fuzz": ["-fsanitizer=fuzzer,address"],
+    }),
+    defines = select({
+        "//conditions:default": [],
+        ":fuzz": ["HAVE_FUZZER"],
+    }),
+    deps = [
+        ":descriptor_upbproto",
+        ":upb",
+    ],
+)
+
 # copybara:strip_for_google3_begin
 upb_proto_reflection_library(
     name = "descriptor_upbreflection",

bazel/upb_proto_library.bzl

@@ -37,10 +37,8 @@ def _get_real_roots(files):
     return roots.keys()
 
 def _generate_output_file(ctx, src, extension):
-    if _is_bazel:
-        real_short_path = _get_real_short_path(src)
-    else:
-        real_short_path = paths.relativize(src.short_path, ctx.label.package)
+    real_short_path = _get_real_short_path(src)
+    real_short_path = paths.relativize(real_short_path, ctx.label.package)
     output_filename = paths.replace_extension(real_short_path, extension)
     ret = ctx.actions.declare_file(output_filename)
     return ret
@@ -177,7 +175,7 @@ def _upb_proto_rule_impl(ctx):
              "_WrappedGeneratedSrcs (aspect should have handled this).")
     cc_info = dep[_WrappedCcInfo].cc_info
     srcs = dep[_WrappedGeneratedSrcs].srcs
-    lib = cc_info.linking_context.libraries_to_link[0]
+    lib = cc_info.linking_context.libraries_to_link.to_list()[0]
     files = _filter_none([
         lib.static_library,
         lib.pic_static_library,

tests/file_descriptor_parsenew_fuzzer.cc

@@ -0,0 +1,15 @@
+#include <cstdint>
+
+#include "google/protobuf/descriptor.upb.h"
+#include "upb/upb.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  upb::Arena arena;
+  google_protobuf_FileDescriptorProto_parse(reinterpret_cast<const char*>(data),
+                                            size, arena.ptr());
+  return 0;
+}
+
+#ifndef HAVE_FUZZER
+int main() {}
+#endif

tools/make_cmakelists.py

@@ -48,7 +48,7 @@ class BuildFileFunctions(object):
         else:
             print("Warning: no such file: " + file)
 
-    if filter(IsSourceFile, files):
+    if list(filter(IsSourceFile, files)):
       # Has sources, make this a normal library.
       self.converter.toplevel += "add_library(%s\n  %s)\n" % (
           kwargs["name"],
@@ -272,8 +272,8 @@ def GetDict(obj):
 
 globs = GetDict(converter)
 
-execfile("WORKSPACE", GetDict(WorkspaceFileFunctions(converter)))
-execfile("BUILD", GetDict(BuildFileFunctions(converter)))
+exec(open("WORKSPACE").read(), GetDict(WorkspaceFileFunctions(converter)))
+exec(open("BUILD").read(), GetDict(BuildFileFunctions(converter)))
 
 with open(sys.argv[1], "w") as f:
   f.write(converter.convert())