| 1 | // Test that a stack overflow fails as expected |
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| 2 | |
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| 3 | // RUN: %clang_noscs %s -o %t -DITERATIONS=3 |
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| 4 | // RUN: %run %t | FileCheck %s |
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| 5 | // RUN: %clang_noscs %s -o %t -DITERATIONS=12 |
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| 6 | // RUN: %run %t | FileCheck -check-prefix=OVERFLOW_SUCCESS %s |
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| 7 | |
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| 8 | // RUN: %clang_scs %s -o %t -DITERATIONS=3 |
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| 9 | // RUN: %run %t | FileCheck %s |
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| 10 | |
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| 11 | // On aarch64 we just load the return address from the shadow call stack so we |
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| 12 | // do not expect to see the output from print_and_exit. |
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| 13 | // RUN: %clang_scs %s -o %t -DITERATIONS=12 |
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| 14 | // RUN: %run %t | FileCheck %S/overflow.c |
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| 15 | |
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| 16 | #include <stdio.h> |
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| 17 | #include <stdlib.h> |
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| 18 | |
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| 19 | #include "minimal_runtime.h" |
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| 20 | |
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| 21 | void print_and_exit(void) { |
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| 22 | // CHECK-NOT: Stack overflow successful. |
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| 23 | // OVERFLOW_SUCCESS: Stack overflow successful. |
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| 24 | scs_fputs_stdout("Stack overflow successful.\n" ); |
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| 25 | exit(status: 0); |
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| 26 | } |
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| 27 | |
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| 28 | int scs_main(void) |
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| 29 | { |
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| 30 | void *addrs[4]; |
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| 31 | for (int i = 0; i < ITERATIONS; i++) |
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| 32 | addrs[i] = &print_and_exit; |
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| 33 | |
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| 34 | scs_fputs_stdout("Returning.\n" ); |
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| 35 | |
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| 36 | return 0; |
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| 37 | } |
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| 38 | |
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