xref: /aosp_15_r20/external/compiler-rt/test/safestack/buffer-copy-vla.c (revision 7c3d14c8b49c529e04be81a3ce6f5cc23712e4c6) 
1*7c3d14c8STreehugger Robot // RUN: %clang_safestack %s -o %t
2*7c3d14c8STreehugger Robot // RUN: %run %t
3*7c3d14c8STreehugger Robot 
4*7c3d14c8STreehugger Robot #include "utils.h"
5*7c3d14c8STreehugger Robot 
6*7c3d14c8STreehugger Robot // Test that loads/stores work correctly for VLAs on the unsafe stack.
7*7c3d14c8STreehugger Robot 
main(int argc,char ** argv)8*7c3d14c8STreehugger Robot int main(int argc, char **argv)
9*7c3d14c8STreehugger Robot {
10*7c3d14c8STreehugger Robot   int i = 128;
11*7c3d14c8STreehugger Robot   break_optimization(&i);
12*7c3d14c8STreehugger Robot   char buffer[i];
13*7c3d14c8STreehugger Robot 
14*7c3d14c8STreehugger Robot   // check that we can write to a buffer
15*7c3d14c8STreehugger Robot   for (i = 0; argv[0][i] && i < sizeof (buffer) - 1; ++i)
16*7c3d14c8STreehugger Robot     buffer[i] = argv[0][i];
17*7c3d14c8STreehugger Robot   buffer[i] = '\0';
18*7c3d14c8STreehugger Robot 
19*7c3d14c8STreehugger Robot   break_optimization(buffer);
20*7c3d14c8STreehugger Robot 
21*7c3d14c8STreehugger Robot   // check that we can read from a buffer
22*7c3d14c8STreehugger Robot   for (i = 0; argv[0][i] && i < sizeof (buffer) - 1; ++i)
23*7c3d14c8STreehugger Robot     if (buffer[i] != argv[0][i])
24*7c3d14c8STreehugger Robot       return 1;
25*7c3d14c8STreehugger Robot   return 0;
26*7c3d14c8STreehugger Robot }
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