| ; Checks that asan prologue does not add debug locations, which would |
| ; fool findPrologueEndLoc because it sets the end of the prologue to the |
| ; first instruction. Breaking on the instrumented function in a debugger |
| ; would then stop at that instruction, before the prologue is finished. |
| |
| ; RUN: opt < %s -passes='asan-pipeline' -S | FileCheck %s |
| ; 1: void f(int *arg) { |
| ; 2: } |
| ; 3: int main(int argc, char **argv) { |
| ; 4: f(&argc); |
| ; 5: } |
| ; clang 1.cc -g -S -emit-llvm -o - | sed 's/#0 = {/#0 = { sanitize_address/' |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define dso_local i32 @main(i32 %argc, i8** %argv) #0 !dbg !15 { |
| entry: |
| ; No suffix like !dbg !123 |
| ; CHECK: %asan_local_stack_base = alloca i64, align 8{{$}} |
| ; CHECK: %3 = call i64 @__asan_stack_malloc_0(i64 64){{$}} |
| %argc.addr = alloca i32, align 4 |
| %argv.addr = alloca i8**, align 8 |
| store i32 %argc, i32* %argc.addr, align 4 |
| call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !21, metadata !DIExpression()), !dbg !22 |
| store i8** %argv, i8*** %argv.addr, align 8 |
| call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !23, metadata !DIExpression()), !dbg !24 |
| call void @f(i32* %argc.addr), !dbg !25 |
| ret i32 0, !dbg !26 |
| } |
| |
| define dso_local void @f(i32* %arg) #0 !dbg !7 { |
| entry: |
| %arg.addr = alloca i32*, align 8 |
| store i32* %arg, i32** %arg.addr, align 8 |
| call void @llvm.dbg.declare(metadata i32** %arg.addr, metadata !12, metadata !DIExpression()), !dbg !13 |
| ret void, !dbg !14 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { sanitize_address noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nounwind readnone speculatable willreturn } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (git@github.com:llvm/llvm-project 1ac700cdef787383ad49a0e37d9894491ef19480)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) |
| !1 = !DIFile(filename: "2.c", directory: "/home/builduser") |
| !2 = !{} |
| !3 = !{i32 7, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 10.0.0 (git@github.com:llvm/llvm-project 1ac700cdef787383ad49a0e37d9894491ef19480)"} |
| !7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{null, !10} |
| !10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64) |
| !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !12 = !DILocalVariable(name: "arg", arg: 1, scope: !7, file: !1, line: 1, type: !10) |
| !13 = !DILocation(line: 1, column: 13, scope: !7) |
| !14 = !DILocation(line: 2, column: 1, scope: !7) |
| !15 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !16, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) |
| !16 = !DISubroutineType(types: !17) |
| !17 = !{!11, !11, !18} |
| !18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64) |
| !19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64) |
| !20 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) |
| !21 = !DILocalVariable(name: "argc", arg: 1, scope: !15, file: !1, line: 3, type: !11) |
| !22 = !DILocation(line: 3, column: 14, scope: !15) |
| !23 = !DILocalVariable(name: "argv", arg: 2, scope: !15, file: !1, line: 3, type: !18) |
| !24 = !DILocation(line: 3, column: 27, scope: !15) |
| !25 = !DILocation(line: 4, column: 3, scope: !15) |
| !26 = !DILocation(line: 5, column: 1, scope: !15) |