[PATCH] D81591: [ASan][Test] Split out global alias test

Marco Elver via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Wed Jun 10 11:06:53 PDT 2020 

This revision was automatically updated to reflect the committed changes.
Closed by commit rG0f04f104537b: [ASan][Test] Split out global alias test (authored by melver).

Changed prior to commit:
  https://reviews.llvm.org/D81591?vs=269898&id=269911#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D81591/new/

https://reviews.llvm.org/D81591

Files:
  clang/test/CodeGen/asan-globals-alias.cpp
  clang/test/CodeGen/asan-globals.cpp


Index: clang/test/CodeGen/asan-globals.cpp
===================================================================
--- clang/test/CodeGen/asan-globals.cpp
+++ clang/test/CodeGen/asan-globals.cpp
@@ -12,11 +12,9 @@
 int __attribute__((no_sanitize("address"))) attributed_global;
 int blacklisted_global;
 
-int __attribute__((section("__DATA, __common"))) sectioned_global; // [KASAN] ignore globals in a section
+int __attribute__((section("__DATA, __common"))) sectioned_global; // KASAN - ignore globals in a section
 extern "C" {
-int aliased_global;                                                 // [KASAN] ignore globals prefixed by aliases with __-prefix [below]
-extern int __attribute__((alias("aliased_global"))) __global_alias; // [KASAN] aliased_global ignored
-int __special_global;                                               // [KASAN] ignore globals with __-prefix
+int __special_global; // KASAN - ignore globals with __-prefix
 }
 
 void func() {
@@ -26,8 +24,6 @@
 
 // ASAN: sectioned_global{{.*}}{ i32, [60 x i8] }{{.*}}align 32
 // KASAN: sectioned_global{{.*}}i32
-// ASAN: @aliased_global{{.*}}{ i32, [60 x i8] }{{.*}}align 32
-// KASAN: @aliased_global{{.*}}i32
 // ASAN: @__special_global{{.*}}{ i32, [60 x i8] }{{.*}}align 32
 // KASAN: @__special_global{{.*}}i32
 
@@ -36,7 +32,7 @@
 // ASAN-NEXT: call void @__asan_version_mismatch_check
 // KASAN-NOT: call void @__asan_init
 // KASAN-NOT: call void @__asan_version_mismatch_check
-// ASAN-NEXT: call void @__asan_register_globals({{.*}}, i{{32|64}} 8)
+// ASAN-NEXT: call void @__asan_register_globals({{.*}}, i{{32|64}} 7)
 // KASAN-NEXT: call void @__asan_register_globals({{.*}}, i{{32|64}} 5)
 // CHECK-NEXT: ret void
 
@@ -44,7 +40,7 @@
 // CHECK-NEXT: call void @__asan_unregister_globals
 // CHECK-NEXT: ret void
 
-// CHECK: !llvm.asan.globals = !{![[EXTRA_GLOBAL:[0-9]+]], ![[GLOBAL:[0-9]+]], ![[DYN_INIT_GLOBAL:[0-9]+]], ![[ATTR_GLOBAL:[0-9]+]], ![[BLACKLISTED_GLOBAL:[0-9]+]], ![[SECTIONED_GLOBAL:[0-9]+]], ![[ALIASED_GLOBAL:[0-9]+]], ![[SPECIAL_GLOBAL:[0-9]+]], ![[STATIC_VAR:[0-9]+]], ![[LITERAL:[0-9]+]]}
+// CHECK: !llvm.asan.globals = !{![[EXTRA_GLOBAL:[0-9]+]], ![[GLOBAL:[0-9]+]], ![[DYN_INIT_GLOBAL:[0-9]+]], ![[ATTR_GLOBAL:[0-9]+]], ![[BLACKLISTED_GLOBAL:[0-9]+]], ![[SECTIONED_GLOBAL:[0-9]+]], ![[SPECIAL_GLOBAL:[0-9]+]], ![[STATIC_VAR:[0-9]+]], ![[LITERAL:[0-9]+]]}
 // CHECK: ![[EXTRA_GLOBAL]] = !{{{.*}} ![[EXTRA_GLOBAL_LOC:[0-9]+]], !"extra_global", i1 false, i1 false}
 // CHECK: ![[EXTRA_GLOBAL_LOC]] = !{!"{{.*}}extra-source.cpp", i32 1, i32 5}
 // CHECK: ![[GLOBAL]] = !{{{.*}} ![[GLOBAL_LOC:[0-9]+]], !"global", i1 false, i1 false}
@@ -55,16 +51,14 @@
 // CHECK: ![[BLACKLISTED_GLOBAL]] = !{{{.*}}, null, null, i1 false, i1 true}
 // CHECK: ![[SECTIONED_GLOBAL]] = !{{{.*}} ![[SECTIONED_GLOBAL_LOC:[0-9]+]], !"sectioned_global", i1 false, i1 false}
 // CHECK: ![[SECTIONED_GLOBAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 15, i32 50}
-// CHECK: ![[ALIASED_GLOBAL]] = !{{{.*}} ![[ALIASED_GLOBAL_LOC:[0-9]+]], !"aliased_global", i1 false, i1 false}
-// CHECK: ![[ALIASED_GLOBAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 17, i32 5}
 // CHECK: ![[SPECIAL_GLOBAL]] = !{{{.*}} ![[SPECIAL_GLOBAL_LOC:[0-9]+]], !"__special_global", i1 false, i1 false}
-// CHECK: ![[SPECIAL_GLOBAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 19, i32 5}
+// CHECK: ![[SPECIAL_GLOBAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 17, i32 5}
 // CHECK: ![[STATIC_VAR]] = !{{{.*}} ![[STATIC_LOC:[0-9]+]], !"static_var", i1 false, i1 false}
-// CHECK: ![[STATIC_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 23, i32 14}
+// CHECK: ![[STATIC_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 21, i32 14}
 // CHECK: ![[LITERAL]] = !{{{.*}} ![[LITERAL_LOC:[0-9]+]], !"<string literal>", i1 false, i1 false}
-// CHECK: ![[LITERAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 24, i32 25}
+// CHECK: ![[LITERAL_LOC]] = !{!"{{.*}}asan-globals.cpp", i32 22, i32 25}
 
-// BLACKLIST-SRC: !llvm.asan.globals = !{![[EXTRA_GLOBAL:[0-9]+]], ![[GLOBAL:[0-9]+]], ![[DYN_INIT_GLOBAL:[0-9]+]], ![[ATTR_GLOBAL:[0-9]+]], ![[BLACKLISTED_GLOBAL:[0-9]+]], ![[SECTIONED_GLOBAL:[0-9]+]], ![[ALIASED_GLOBAL:[0-9]+]], ![[SPECIAL_GLOBAL:[0-9]+]], ![[STATIC_VAR:[0-9]+]], ![[LITERAL:[0-9]+]]}
+// BLACKLIST-SRC: !llvm.asan.globals = !{![[EXTRA_GLOBAL:[0-9]+]], ![[GLOBAL:[0-9]+]], ![[DYN_INIT_GLOBAL:[0-9]+]], ![[ATTR_GLOBAL:[0-9]+]], ![[BLACKLISTED_GLOBAL:[0-9]+]], ![[SECTIONED_GLOBAL:[0-9]+]], ![[SPECIAL_GLOBAL:[0-9]+]], ![[STATIC_VAR:[0-9]+]], ![[LITERAL:[0-9]+]]}
 // BLACKLIST-SRC: ![[EXTRA_GLOBAL]] = !{{{.*}} ![[EXTRA_GLOBAL_LOC:[0-9]+]], !"extra_global", i1 false, i1 false}
 // BLACKLIST-SRC: ![[EXTRA_GLOBAL_LOC]] = !{!"{{.*}}extra-source.cpp", i32 1, i32 5}
 // BLACKLIST-SRC: ![[GLOBAL]] = !{{{.*}} null, null, i1 false, i1 true}
@@ -72,7 +66,6 @@
 // BLACKLIST-SRC: ![[ATTR_GLOBAL]] = !{{{.*}}, null, null, i1 false, i1 true}
 // BLACKLIST-SRC: ![[BLACKLISTED_GLOBAL]] = !{{{.*}}, null, null, i1 false, i1 true}
 // BLACKLIST-SRC: ![[SECTIONED_GLOBAL]] = !{{{.*}} null, null, i1 false, i1 true}
-// BLACKLIST-SRC: ![[ALIASED_GLOBAL]] = !{{{.*}} null, null, i1 false, i1 true}
 // BLACKLIST-SRC: ![[SPECIAL_GLOBAL]] = !{{{.*}} null, null, i1 false, i1 true}
 // BLACKLIST-SRC: ![[STATIC_VAR]] = !{{{.*}} null, null, i1 false, i1 true}
 // BLACKLIST-SRC: ![[LITERAL]] = !{{{.*}} null, null, i1 false, i1 true}
Index: clang/test/CodeGen/asan-globals-alias.cpp
===================================================================
--- /dev/null
+++ clang/test/CodeGen/asan-globals-alias.cpp
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -triple x86_64-linux -fsanitize=address -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,ASAN
+// RUN: %clang_cc1 -triple x86_64-linux -fsanitize=kernel-address -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,KASAN
+//
+// Not all platforms support aliases - test for Linux only.
+
+int global;                                                         // to generate ctor for at least 1 global
+int aliased_global;                                                 // KASAN - ignore globals prefixed by aliases with __-prefix (below)
+extern int __attribute__((alias("aliased_global"))) __global_alias; // KASAN - aliased_global ignored
+
+// ASAN: @aliased_global{{.*}}{ i32, [60 x i8] }{{.*}}align 32
+// KASAN: @aliased_global{{.*}}i32
+
+// CHECK-LABEL: define internal void @asan.module_ctor
+// ASAN: call void @__asan_register_globals({{.*}}, i{{32|64}} 2)
+// KASAN: call void @__asan_register_globals({{.*}}, i{{32|64}} 1)
+// CHECK-NEXT: ret void
+
+// CHECK-LABEL: define internal void @asan.module_dtor
+// CHECK-NEXT: call void @__asan_unregister_globals
+// CHECK-NEXT: ret void


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D81591.269911.patch
Type: text/x-patch
Size: 6668 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20200610/40816cb7/attachment.bin>

More information about the cfe-commits mailing list