Auto merge of #94601 - csmoe:android-asan, r=nagisa

add address sanitizer fo android

We have been being using asan to debug the rust/cpp/c mixed android application in production for months: recompile the rust library with a patched rustc, everything just works fine. The patch is really small thanks to `@nagisa` 's refactoring in #81866

r? `@nagisa`

Author: bors

compiler/rustc_target/src/spec/aarch64_linux_android.rs

@@ -16,7 +16,8 @@ pub fn target() -> Target {
             features: "+neon,+fp-armv8".to_string(),
             supported_sanitizers: SanitizerSet::CFI
                 | SanitizerSet::HWADDRESS
-                | SanitizerSet::MEMTAG,
+                | SanitizerSet::MEMTAG
+                | SanitizerSet::ADDRESS,
             ..super::android_base::opts()
         },
     }

compiler/rustc_target/src/spec/arm_linux_androideabi.rs

@@ -1,4 +1,4 @@
-use crate::spec::{Target, TargetOptions};
+use crate::spec::{SanitizerSet, Target, TargetOptions};
 
 pub fn target() -> Target {
     Target {
@@ -10,6 +10,7 @@ pub fn target() -> Target {
             abi: "eabi".to_string(),
             // https://developer.android.com/ndk/guides/abis.html#armeabi
             features: "+strict-align,+v5te".to_string(),
+            supported_sanitizers: SanitizerSet::ADDRESS,
             max_atomic_width: Some(32),
             ..super::android_base::opts()
         },

compiler/rustc_target/src/spec/armv7_linux_androideabi.rs

@@ -1,4 +1,4 @@
-use crate::spec::{LinkerFlavor, Target, TargetOptions};
+use crate::spec::{LinkerFlavor, SanitizerSet, Target, TargetOptions};
 
 // This target if is for the baseline of the Android v7a ABI
 // in thumb mode. It's named armv7-* instead of thumbv7-*
@@ -19,6 +19,7 @@ pub fn target() -> Target {
         options: TargetOptions {
             abi: "eabi".to_string(),
             features: "+v7,+thumb-mode,+thumb2,+vfp3,-d32,-neon".to_string(),
+            supported_sanitizers: SanitizerSet::ADDRESS,
             max_atomic_width: Some(64),
             ..base
         },

compiler/rustc_target/src/spec/i686_linux_android.rs

@@ -1,4 +1,4 @@
-use crate::spec::{StackProbeType, Target};
+use crate::spec::{SanitizerSet, StackProbeType, Target, TargetOptions};
 
 // See https://developer.android.com/ndk/guides/abis.html#x86
 // for target ABI requirements.
@@ -21,6 +21,6 @@ pub fn target() -> Target {
             f64:32:64-f80:32-n8:16:32-S128"
             .to_string(),
         arch: "x86".to_string(),
-        options: base,
+        options: TargetOptions { supported_sanitizers: SanitizerSet::ADDRESS, ..base },
     }
 }

compiler/rustc_target/src/spec/x86_64_linux_android.rs

@@ -1,4 +1,4 @@
-use crate::spec::{LinkerFlavor, StackProbeType, Target};
+use crate::spec::{LinkerFlavor, SanitizerSet, StackProbeType, Target, TargetOptions};
 
 pub fn target() -> Target {
     let mut base = super::android_base::opts();
@@ -16,6 +16,6 @@ pub fn target() -> Target {
         data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
             .to_string(),
         arch: "x86_64".to_string(),
-        options: base,
+        options: TargetOptions { supported_sanitizers: SanitizerSet::ADDRESS, ..base },
     }
 }