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1bfe6867e2
Summary: private and internal: should not trigger ODR at all. unnamed_addr: current ODR checking approach fail and rereport false violation if a linker merges such globals linkonce_odr, weak_odr: could cause similar problems and they are already not instrumented for ELF. Reviewers: eugenis, kcc Subscribers: kubamracek, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D55621 llvm-svn: 349015
36 lines
1.9 KiB
LLVM
36 lines
1.9 KiB
LLVM
; RUN: opt < %s -asan -asan-module -S | FileCheck %s --check-prefixes=CHECK-NOALIAS,CHECK-NOINDICATOR
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; RUN: opt < %s -asan -asan-module -asan-use-private-alias=1 -S | FileCheck %s --check-prefixes=CHECK-ALIAS,CHECK-NOINDICATOR
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; RUN: opt < %s -asan -asan-module -asan-use-odr-indicator=1 -S | FileCheck %s --check-prefixes=CHECK-INDICATOR,CHECK-NOALIAS
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; RUN: opt < %s -asan -asan-module -asan-use-private-alias=1 -asan-use-odr-indicator=1 -S | FileCheck %s --check-prefixes=CHECK-ALIAS,CHECK-INDICATOR
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@a = dso_local global [2 x i32] zeroinitializer, align 4
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@b = private global [2 x i32] zeroinitializer, align 4
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@c = internal global [2 x i32] zeroinitializer, align 4
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@d = unnamed_addr global [2 x i32] zeroinitializer, align 4
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; Check that we generate internal alias and odr indicator symbols for global to be protected.
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; CHECK-NOINDICATOR-NOT: __odr_asan_gen_a
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; CHECK-NOALIAS-NOT: private alias
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; CHECK-INDICATOR: @__odr_asan_gen_a = global i8 0, align 1
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; CHECK-ALIAS: @0 = private alias { [2 x i32], [56 x i8] }, { [2 x i32], [56 x i8] }* @a
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; CHECK-ALIAS: @1 = private alias { [2 x i32], [56 x i8] }, { [2 x i32], [56 x i8] }* @b
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; CHECK-ALIAS: @2 = private alias { [2 x i32], [56 x i8] }, { [2 x i32], [56 x i8] }* @c
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; CHECK-ALIAS: @3 = private alias { [2 x i32], [56 x i8] }, { [2 x i32], [56 x i8] }* @d
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; Function Attrs: nounwind sanitize_address uwtable
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define i32 @foo(i32 %M) #0 {
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entry:
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%M.addr = alloca i32, align 4
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store i32 %M, i32* %M.addr, align 4
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store volatile i32 6, i32* getelementptr inbounds ([2 x i32], [2 x i32]* @a, i64 2, i64 0), align 4
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%0 = load i32, i32* %M.addr, align 4
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%idxprom = sext i32 %0 to i64
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%arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* @a, i64 0, i64 %idxprom
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%1 = load volatile i32, i32* %arrayidx, align 4
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ret i32 %1
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}
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