17fdd028da
The compiler in master doesn't leave a gap between the buffer and the stack guard canary. Bug: http://b/27815668 Change-Id: Iae6681683881055c2719d661a2179f5305c23135
26 lines
1 KiB
C++
26 lines
1 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Deliberately overwrite the stack canary.
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__attribute__((noinline)) void modify_stack_protector_test() {
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char buf[128];
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// We can't use memset here because it's fortified, and we want to test
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// the line of defense *after* that.
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// Without volatile, the generic x86/x86-64 targets don't write to the stack.
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volatile char* p = buf;
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int size = static_cast<int>(sizeof(buf) + 1);
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while ((p - buf) < size) *p++ = '\0';
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}
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