Propagate all sanitizer flags in SDK snapshots.
liblog snapshot needs to sanitizer.address=false to avoid cycle in asan
builds. Adding that separately in library_sdk_member.go would start to
feel like whack-a-mole, so the snapshot generation is instead extended
to handle nested property structs.
This uses the BpPropertySet.AddProperty extension in
https://r.android.com/1423510, and common value optimisation now
recurses into non-anonymous structs, instead of comparing them as a
whole.
Test: m nothing
Test: `m SANITIZE_TARGET=address nothing` with prebuilts/runtime
present in the manifest and a fresh snapshot made with this
Bug: 151303681
Change-Id: I472554117a488e6c800045cb2ed59377778571a4
diff --git a/sdk/update.go b/sdk/update.go
index 537ab13..65baa5e 100644
--- a/sdk/update.go
+++ b/sdk/update.go
@@ -1348,7 +1348,8 @@
// A property that can be optimized by the commonValueExtractor.
type extractorProperty struct {
- // The name of the field for this property.
+ // The name of the field for this property. It is a "."-separated path for
+ // fields in non-anonymous substructs.
name string
// Filter that can use metadata associated with the properties being optimized
@@ -1385,18 +1386,18 @@
func newCommonValueExtractor(propertiesStruct interface{}) *commonValueExtractor {
structType := getStructValue(reflect.ValueOf(propertiesStruct)).Type()
extractor := &commonValueExtractor{}
- extractor.gatherFields(structType, nil)
+ extractor.gatherFields(structType, nil, "")
return extractor
}
// Gather the fields from the supplied structure type from which common values will
// be extracted.
//
-// This is recursive function. If it encounters an embedded field (no field name)
-// that is a struct then it will recurse into that struct passing in the accessor
-// for the field. That will then be used in the accessors for the fields in the
-// embedded struct.
-func (e *commonValueExtractor) gatherFields(structType reflect.Type, containingStructAccessor fieldAccessorFunc) {
+// This is recursive function. If it encounters a struct then it will recurse
+// into it, passing in the accessor for the field and the struct name as prefix
+// for the nested fields. That will then be used in the accessors for the fields
+// in the embedded struct.
+func (e *commonValueExtractor) gatherFields(structType reflect.Type, containingStructAccessor fieldAccessorFunc, namePrefix string) {
for f := 0; f < structType.NumField(); f++ {
field := structType.Field(f)
if field.PkgPath != "" {
@@ -1426,7 +1427,7 @@
// Save a copy of the field index for use in the function.
fieldIndex := f
- name := field.Name
+ name := namePrefix + field.Name
fieldGetter := func(value reflect.Value) reflect.Value {
if containingStructAccessor != nil {
@@ -1448,9 +1449,15 @@
return value.Field(fieldIndex)
}
- if field.Type.Kind() == reflect.Struct && field.Anonymous {
- // Gather fields from the embedded structure.
- e.gatherFields(field.Type, fieldGetter)
+ if field.Type.Kind() == reflect.Struct {
+ // Gather fields from the nested or embedded structure.
+ var subNamePrefix string
+ if field.Anonymous {
+ subNamePrefix = namePrefix
+ } else {
+ subNamePrefix = name + "."
+ }
+ e.gatherFields(field.Type, fieldGetter, subNamePrefix)
} else {
property := extractorProperty{
name,
@@ -1514,7 +1521,8 @@
// Iterates over each exported field (capitalized name) and checks to see whether they
// have the same value (using DeepEquals) across all the input properties. If it does not then no
// change is made. Otherwise, the common value is stored in the field in the commonProperties
-// and the field in each of the input properties structure is set to its default value.
+// and the field in each of the input properties structure is set to its default value. Nested
+// structs are visited recursively and their non-struct fields are compared.
func (e *commonValueExtractor) extractCommonProperties(commonProperties interface{}, inputPropertiesSlice interface{}) error {
commonPropertiesValue := reflect.ValueOf(commonProperties)
commonStructValue := commonPropertiesValue.Elem()