xref: /llvm-project/lldb/test/API/clear-sbvalue-nonaddressable-bits/main.c (revision eb7dc991841489e2f8f18467705944c9136b06d2) 
1*eb7dc991SJason Molenda #include <stdint.h>
2*eb7dc991SJason Molenda 
3*eb7dc991SJason Molenda int global = 10;
4*eb7dc991SJason Molenda 
main()5*eb7dc991SJason Molenda int main() {
6*eb7dc991SJason Molenda   int count = 5;
7*eb7dc991SJason Molenda   int *count_p = &count;
8*eb7dc991SJason Molenda 
9*eb7dc991SJason Molenda   // Add some metadata in the top byte (this will crash unless the
10*eb7dc991SJason Molenda   // test is running with TBI enabled, but we won't dereference it)
11*eb7dc991SJason Molenda 
12*eb7dc991SJason Molenda   intptr_t scratch = (intptr_t)count_p;
13*eb7dc991SJason Molenda   scratch |= (3ULL << 60);
14*eb7dc991SJason Molenda   int *count_invalid_p = (int *)scratch;
15*eb7dc991SJason Molenda 
16*eb7dc991SJason Molenda   int (*main_p)() = main;
17*eb7dc991SJason Molenda   scratch = (intptr_t)main_p;
18*eb7dc991SJason Molenda   scratch |= (3ULL << 60);
19*eb7dc991SJason Molenda   int (*main_invalid_p)() = (int (*)())scratch;
20*eb7dc991SJason Molenda 
21*eb7dc991SJason Molenda   int *global_p = &global;
22*eb7dc991SJason Molenda   scratch = (intptr_t)global_p;
23*eb7dc991SJason Molenda   scratch |= (3ULL << 60);
24*eb7dc991SJason Molenda   int *global_invalid_p = (int *)scratch;
25*eb7dc991SJason Molenda 
26*eb7dc991SJason Molenda   return count; // break here
27*eb7dc991SJason Molenda }
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