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authorFangrui Song <maskray@google.com>2021-01-11 23:56:32 -0800
committerFangrui Song <maskray@google.com>2021-01-11 23:56:32 -0800
commit0b11ca56fe0473a41a6e9cdc5d228c7d1e0d6d72 (patch)
tree6d9013a7b236e33deee47f247f71aa60eec06477 /libio/iofread.c
parent87d583c6e8cd0e49f64da76636ebeec033298b4d (diff)
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Unconditionally define __stack_chk_guard [BZ #26817]maskray/stack_chk_guard
__stack_chk_guard is currently unavailable on architectures which define THREAD_SET_STACK_GUARD, so {gcc,clang} -fstack-protector -mstack-protector-guard=global will fail to link due to the undefined symbol. Define __stack_chk_guard to make -mstack-protector-guard=global compiled user programs work. `#define THREAD_SET_STACK_GUARD` code is moved outside of `#ifndef __ASSEMBLER__` so that cpp can preprocess elf/Versions.
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