1 ; RUN: opt < %s -asan -asan-module -S | FileCheck %s 2 3 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 4 target triple = "x86_64-unknown-linux-gnu" 5 6 ; Globals: 7 @global = global i32 0, align 4 8 @dyn_init_global = global i32 0, align 4 9 @blacklisted_global = global i32 0, align 4 10 @_ZZ4funcvE10static_var = internal global i32 0, align 4 11 @.str = private unnamed_addr constant [14 x i8] c"Hello, world!\00", align 1 12 @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_asan_globals.cpp, i8* null }] 13 14 ; Check that globals were instrumented: 15 ; CHECK: @global = global { i32, [60 x i8] } zeroinitializer, align 32 16 ; CHECK: @.str = internal unnamed_addr constant { [14 x i8], [50 x i8] } { [14 x i8] c"Hello, world!\00", [50 x i8] zeroinitializer }, align 32 17 18 ; Check emitted location descriptions: 19 ; CHECK: [[VARNAME:@__asan_gen_.[0-9]+]] = private unnamed_addr constant [7 x i8] c"global\00", align 1 20 ; CHECK: [[FILENAME:@__asan_gen_.[0-9]+]] = private unnamed_addr constant [22 x i8] c"/tmp/asan-globals.cpp\00", align 1 21 ; CHECK: [[LOCDESCR:@__asan_gen_.[0-9]+]] = private unnamed_addr constant { [22 x i8]*, i32, i32 } { [22 x i8]* [[FILENAME]], i32 5, i32 5 } 22 23 ; Check that location descriptors and global names were passed into __asan_register_globals: 24 ; CHECK: i64 ptrtoint ([7 x i8]* [[VARNAME]] to i64) 25 ; CHECK: i64 ptrtoint ({ [22 x i8]*, i32, i32 }* [[LOCDESCR]] to i64) 26 27 ; Function Attrs: nounwind sanitize_address 28 define internal void @__cxx_global_var_init() #0 section ".text.startup" { 29 entry: 30 %0 = load i32, i32* @global, align 4 31 store i32 %0, i32* @dyn_init_global, align 4 32 ret void 33 } 34 35 ; Function Attrs: nounwind sanitize_address 36 define void @_Z4funcv() #1 { 37 entry: 38 %literal = alloca i8*, align 8 39 store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i32 0, i32 0), i8** %literal, align 8 40 ret void 41 } 42 43 ; Function Attrs: nounwind sanitize_address 44 define internal void @_GLOBAL__sub_I_asan_globals.cpp() #0 section ".text.startup" { 45 entry: 46 call void @__cxx_global_var_init() 47 ret void 48 } 49 50 attributes #0 = { nounwind sanitize_address } 51 attributes #1 = { nounwind sanitize_address "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 52 53 !llvm.asan.globals = !{!0, !1, !2, !3, !4} 54 !llvm.ident = !{!5} 55 56 !0 = !{i32* @global, !6, !"global", i1 false, i1 false} 57 !1 = !{i32* @dyn_init_global, !7, !"dyn_init_global", i1 true, i1 false} 58 !2 = !{i32* @blacklisted_global, null, null, i1 false, i1 true} 59 !3 = !{i32* @_ZZ4funcvE10static_var, !8, !"static_var", i1 false, i1 false} 60 !4 = !{[14 x i8]* @.str, !9, !"<string literal>", i1 false, i1 false} 61 62 !5 = !{!"clang version 3.5.0 (211282)"} 63 64 !6 = !{!"/tmp/asan-globals.cpp", i32 5, i32 5} 65 !7 = !{!"/tmp/asan-globals.cpp", i32 7, i32 5} 66 !8 = !{!"/tmp/asan-globals.cpp", i32 12, i32 14} 67 !9 = !{!"/tmp/asan-globals.cpp", i32 14, i32 25} 68
