clang/test/Analysis/z3/Inputs/MockZ3_solver_check.c

   1 #include <dlfcn.h>
   2 #include <stdio.h>
   3
   4 #include <z3.h>
   5
   6 // Mock implementation: return UNDEF for the 5th invocation, otherwise it just
   7 // returns the result of the real invocation.
   8 Z3_lbool Z3_API Z3_solver_check(Z3_context c, Z3_solver s) {
   9   static Z3_lbool (*OriginalFN)(Z3_context, Z3_solver);
  10   if (!OriginalFN) {
  11     OriginalFN = (Z3_lbool(*)(Z3_context, Z3_solver))dlsym(RTLD_NEXT,
  12                                                            "Z3_solver_check");
  13   }
  14
  15   // Invoke the actual solver.
  16   Z3_lbool Result = OriginalFN(c, s);
  17
  18   // Mock the 5th invocation to return UNDEF.
  19   static unsigned int Counter = 0;
  20   if (++Counter == 5) {
  21     fprintf(stderr, "Z3_solver_check returns a mocked value: UNDEF\n");
  22     return Z3_L_UNDEF;
  23   }
  24   fprintf(stderr, "Z3_solver_check returns the real value: %s\n",
  25           (Result == Z3_L_UNDEF ? "UNDEF"
  26                                 : ((Result == Z3_L_TRUE ? "TRUE" : "FALSE"))));
  27   return Result;
  28 }