b64d0b1e6d
This patch adds runtime support for the Safe Stack protection to compiler-rt (see http://reviews.llvm.org/D6094 for the detailed description of the Safe Stack). This patch is our implementation of the safe stack on top of compiler-rt. The patch adds basic runtime support for the safe stack to compiler-rt that manages unsafe stack allocation/deallocation for each thread. Original patch by Volodymyr Kuznetsov and others at the Dependable Systems Lab at EPFL; updates and upstreaming by myself. Differential Revision: http://reviews.llvm.org/D6096 llvm-svn: 239763
24 lines
475 B
C
24 lines
475 B
C
// RUN: %clang_safestack %s -o %t
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// RUN: %run %t
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// RUN: %clang_nosafestack -fno-stack-protector %s -o %t
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// RUN: not %run %t
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// Test that buffer overflows on the unsafe stack do not affect variables on the
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// safe stack.
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__attribute__((noinline))
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void fct(volatile int *buffer)
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{
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memset(buffer - 1, 0, 7 * sizeof(int));
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}
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int main(int argc, char **argv)
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{
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int value1 = 42;
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int buffer[5];
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int value2 = 42;
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fct(buffer);
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return value1 != 42 || value2 != 42;
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}
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