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#===------------------------------------------------------------------------===#
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===------------------------------------------------------------------------===#
# REQUIRES: target={{x86_64-.+-linux-gnu}}
# Inline assembly isn't supported by Memory Sanitizer
# UNSUPPORTED: msan
# RUN: %{build} -no-pie
# RUN: %{run}
# The following assembly is a translation of this code:
#
# _Unwind_Reason_Code callback(int, _Unwind_Action, long unsigned int,
# _Unwind_Exception*, _Unwind_Context*, void*) {
# return _Unwind_Reason_Code(0);
# }
#
# int main() {
# asm(".cfi_remember_state\n\t");
# _Unwind_Exception exc;
# _Unwind_ForcedUnwind(&exc, callback, 0);
# asm(".cfi_restore_state\n\t");
# }
#
# When unwinding, the CFI parser will stop parsing opcodes after the current PC,
# so in this case the DW_CFA_restore_state opcode will never be processed and,
# if the library doesn't clean up properly, the store allocated by
# DW_CFA_remember_state will be leaked.
#
# This test will fail when linked with an asan-enabled libunwind if the
# remembered state is leaked.
SIZEOF_UNWIND_EXCEPTION = 32
.text
callback:
xorl %eax, %eax
retq
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.cfi_startproc
subq $8, %rsp # Adjust stack alignment
subq $SIZEOF_UNWIND_EXCEPTION, %rsp
.cfi_def_cfa_offset 48
.cfi_remember_state
movq %rsp, %rdi
movabsq $callback, %rsi
xorl %edx, %edx
callq _Unwind_ForcedUnwind
.cfi_restore_state
xorl %eax, %eax
addq $SIZEOF_UNWIND_EXCEPTION, %rsp
addq $8, %rsp # Undo stack alignment adjustment
.cfi_def_cfa_offset 8
retq
.Lfunc_end1:
.size main, .Lfunc_end1-main
.cfi_endproc
# -- End function
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