forked from OSchip/llvm-project
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
// Test that a stack overflow fails as expected
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// RUN: %clang_noscs %s -o %t -DITERATIONS=3
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// RUN: %run %t | FileCheck %s
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// RUN: %clang_noscs %s -o %t -DITERATIONS=12
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// RUN: %run %t | FileCheck -check-prefix=OVERFLOW_SUCCESS %s
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// RUN: %clang_scs %s -o %t -DITERATIONS=3
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// RUN: %run %t | FileCheck %s
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// The behavioral check for SCS + overflow lives in the tests overflow-x86_64.c
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// and overflow-aarch64.c. This is because the expected behavior is different
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// between the two platforms. On x86_64 we crash because the comparison between
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// the shadow call stack and the regular stack fails. On aarch64 there is no
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// comparison, we just load the return address from the shadow call stack. So we
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// just expect not to see the output from print_and_exit.
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#include <stdio.h>
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#include <stdlib.h>
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#include "minimal_runtime.h"
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void print_and_exit(void) {
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// CHECK-NOT: Stack overflow successful.
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// OVERFLOW_SUCCESS: Stack overflow successful.
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scs_fputs_stdout("Stack overflow successful.\n");
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exit(0);
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}
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int scs_main(void)
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{
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void *addrs[4];
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for (int i = 0; i < ITERATIONS; i++)
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addrs[i] = &print_and_exit;
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scs_fputs_stdout("Returning.\n");
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return 0;
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}
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