30 lines
578 B
C
30 lines
578 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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// REQUIRES: stable-runtime
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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 prebuf[7];
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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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int postbuf[7];
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fct(prebuf + 1);
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fct(postbuf + 1);
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fct(buffer);
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return value1 != 42 || value2 != 42;
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}
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