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Diffstat (limited to 'test/Instrumentation/AddressSanitizer/global_metadata.ll')
-rw-r--r-- | test/Instrumentation/AddressSanitizer/global_metadata.ll | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/test/Instrumentation/AddressSanitizer/global_metadata.ll b/test/Instrumentation/AddressSanitizer/global_metadata.ll new file mode 100644 index 0000000..9641c3e --- /dev/null +++ b/test/Instrumentation/AddressSanitizer/global_metadata.ll @@ -0,0 +1,63 @@ +; RUN: opt < %s -asan -asan-module -S | FileCheck %s + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +; Globals: +@global = global i32 0, align 4 +@dyn_init_global = global i32 0, align 4 +@blacklisted_global = global i32 0, align 4 +@_ZZ4funcvE10static_var = internal global i32 0, align 4 +@.str = private unnamed_addr constant [14 x i8] c"Hello, world!\00", align 1 +@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_asan_globals.cpp, i8* null }] + +; Sanitizer location descriptors: +@.str1 = private unnamed_addr constant [22 x i8] c"/tmp/asan-globals.cpp\00", align 1 +@.asan_loc_descr = private unnamed_addr constant { [22 x i8]*, i32, i32 } { [22 x i8]* @.str1, i32 5, i32 5 } +@.asan_loc_descr1 = private unnamed_addr constant { [22 x i8]*, i32, i32 } { [22 x i8]* @.str1, i32 7, i32 5 } +@.asan_loc_descr2 = private unnamed_addr constant { [22 x i8]*, i32, i32 } { [22 x i8]* @.str1, i32 12, i32 14 } +@.asan_loc_descr4 = private unnamed_addr constant { [22 x i8]*, i32, i32 } { [22 x i8]* @.str1, i32 14, i32 25 } + +; Check that globals were instrumented, but sanitizer location descriptors weren't: +; CHECK: @global = global { i32, [60 x i8] } zeroinitializer, align 32 +; 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 +; CHECK: @.asan_loc_descr = private unnamed_addr constant { [22 x i8]*, i32, i32 } { [22 x i8]* @.str1, i32 5, i32 5 } + +; Check that location decriptors were passed into __asan_register_globals: +; CHECK: i64 ptrtoint ({ [22 x i8]*, i32, i32 }* @.asan_loc_descr to i64) + +; Function Attrs: nounwind sanitize_address +define internal void @__cxx_global_var_init() #0 section ".text.startup" { +entry: + %0 = load i32* @global, align 4 + store i32 %0, i32* @dyn_init_global, align 4 + ret void +} + +; Function Attrs: nounwind sanitize_address +define void @_Z4funcv() #1 { +entry: + %literal = alloca i8*, align 8 + store i8* getelementptr inbounds ([14 x i8]* @.str, i32 0, i32 0), i8** %literal, align 8 + ret void +} + +; Function Attrs: nounwind sanitize_address +define internal void @_GLOBAL__sub_I_asan_globals.cpp() #0 section ".text.startup" { +entry: + call void @__cxx_global_var_init() + ret void +} + +attributes #0 = { nounwind sanitize_address } +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" } + +!llvm.asan.globals = !{!0, !1, !2, !3, !4} +!llvm.ident = !{!5} + +!0 = metadata !{i32* @global, { [22 x i8]*, i32, i32 }* @.asan_loc_descr, i1 false, i1 false} +!1 = metadata !{i32* @dyn_init_global, { [22 x i8]*, i32, i32 }* @.asan_loc_descr1, i1 true, i1 false} +!2 = metadata !{i32* @blacklisted_global, null, i1 false, i1 true} +!3 = metadata !{i32* @_ZZ4funcvE10static_var, { [22 x i8]*, i32, i32 }* @.asan_loc_descr2, i1 false, i1 false} +!4 = metadata !{[14 x i8]* @.str, { [22 x i8]*, i32, i32 }* @.asan_loc_descr4, i1 false, i1 false} +!5 = metadata !{metadata !"clang version 3.5.0 (211282)"} |