xref: /aosp_15_r20/external/compiler-rt/test/msan/errno.cc (revision 7c3d14c8b49c529e04be81a3ce6f5cc23712e4c6) 
1*7c3d14c8STreehugger Robot // RUN: %clangxx_msan -O0 %s -o %t && %run %t
2*7c3d14c8STreehugger Robot 
3*7c3d14c8STreehugger Robot #include <assert.h>
4*7c3d14c8STreehugger Robot #include <errno.h>
5*7c3d14c8STreehugger Robot #include <stdio.h>
6*7c3d14c8STreehugger Robot #include <unistd.h>
7*7c3d14c8STreehugger Robot 
main()8*7c3d14c8STreehugger Robot int main()
9*7c3d14c8STreehugger Robot {
10*7c3d14c8STreehugger Robot   int x;
11*7c3d14c8STreehugger Robot   int *volatile p = &x;
12*7c3d14c8STreehugger Robot   errno = *p;
13*7c3d14c8STreehugger Robot   int res = read(-1, 0, 0);
14*7c3d14c8STreehugger Robot   assert(res == -1);
15*7c3d14c8STreehugger Robot   if (errno) printf("errno %d\n", errno);
16*7c3d14c8STreehugger Robot   return 0;
17*7c3d14c8STreehugger Robot }
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