compiler-rt/test/cfi/icall/external-call.c

   1 // RUN: %clang_cfi -lm -o %t1 %s
   2 // RUN: %t1 c 1 2>&1 | FileCheck --check-prefix=CFI %s
   3 // RUN: %t1 s 2 2>&1 | FileCheck --check-prefix=CFI %s
   4
   5 // This test uses jump tables containing PC-relative references to external
   6 // symbols, which the Mach-O object writer does not currently support.
   7 // The test passes on i386 Darwin and fails on x86_64, hence unsupported instead of xfail.
   8 // UNSUPPORTED: darwin
   9
  10 #include <stdlib.h>
  11 #include <stdio.h>
  12 #include <math.h>
  13
  14 int main(int argc, char **argv) {
  15   // CFI: 1
  16   fprintf(stderr, "1\n");
  17
  18   double (*fn)(double);
  19   if (argv[1][0] == 's')
  20     fn = sin;
  21   else
  22     fn = cos;
  23
  24   fn(atof(argv[2]));
  25
  26   // CFI: 2
  27   fprintf(stderr, "2\n");
  28 }