compiler-rt/test/asan/TestCases/Linux/coverage-missing.cpp

   1 // Test for "sancov.py missing ...".
   2
   3 // First case: coverage from executable. main() is called on every code path.
   4 // RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard %s -o %t -DFOOBAR -DMAIN
   5 // RUN: rm -rf %t-dir
   6 // RUN: mkdir -p %t-dir
   7 // RUN: cd %t-dir
   8 // RUN: %env_asan_opts=coverage=1:coverage_dir=%t-dir %run %t
   9 // RUN: %sancov print *.sancov > main.txt
  10 // RUN: rm *.sancov
  11 // RUN: count 1 < main.txt
  12 // RUN: %env_asan_opts=coverage=1:coverage_dir=%t-dir %run %t x
  13 // RUN: %sancov print *.sancov > foo.txt
  14 // RUN: rm *.sancov
  15 // RUN: count 3 < foo.txt
  16 // RUN: %env_asan_opts=coverage=1:coverage_dir=%t-dir %run %t x x
  17 // RUN: %sancov print *.sancov > bar.txt
  18 // RUN: rm *.sancov
  19 // RUN: count 4 < bar.txt
  20 // RUN: %sancov missing %t < foo.txt > foo-missing.txt
  21 // RUN: sort main.txt foo-missing.txt -o foo-missing-with-main.txt
  22 // The "missing from foo" set may contain a few bogus PCs from the sanitizer
  23 // runtime, but it must include the entire "bar" code path as a subset. Sorted
  24 // lists can be tested for set inclusion with diff + grep.
  25 // RUN: diff bar.txt foo-missing-with-main.txt > %t.log || true
  26 // RUN: not grep "^<" %t.log
  27
  28 // Second case: coverage from DSO.
  29 // cd %t-dir
  30 // RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard %s -o %dynamiclib -DFOOBAR -shared -fPIC
  31 // RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard %s %dynamiclib -o %t -DMAIN
  32 // RUN: cd ..
  33 // RUN: rm -rf %t-dir
  34 // RUN: mkdir -p %t-dir
  35 // RUN: cd %t-dir
  36 // RUN: %env_asan_opts=coverage=1:coverage_dir=%t-dir %run %t x
  37 // RUN: %sancov print %xdynamiclib_filename.*.sancov > foo.txt
  38 // RUN: rm *.sancov
  39 // RUN: count 2 < foo.txt
  40 // RUN: %env_asan_opts=coverage=1:coverage_dir=%t-dir %run %t x x
  41 // RUN: %sancov print %xdynamiclib_filename.*.sancov > bar.txt
  42 // RUN: rm *.sancov
  43 // RUN: count 3 < bar.txt
  44 // RUN: %sancov missing %dynamiclib < foo.txt > foo-missing.txt
  45 // RUN: diff bar.txt foo-missing.txt > %t.log || true
  46 // RUN: not grep "^<" %t.log
  47
  48 // FIXME %sancov GetInstrumentedPCs relies on objdump -d to
  49 // obtain the number of instrumented PCs.  The i386
  50 // %dynamiclib has .plt entries that are not recognized by
  51 // objdump,
  52 // "sancov.py: found 0 instrumented PCs in *.so",
  53 // causing AddressSanitizer-i386-linux to fail.
  54 // Change it back to x86-target-arch after %sancov switches to a more robust approach.
  55
  56 // REQUIRES: x86_64-target-arch
  57 // XFAIL: android
  58
  59 #include <stdio.h>
  60
  61 void foo1();
  62 void foo2();
  63 void bar1();
  64 void bar2();
  65 void bar3();
  66
  67 #if defined(FOOBAR)
  68 void foo1() { fprintf(stderr, "foo1\n"); }
  69 void foo2() { fprintf(stderr, "foo2\n"); }
  70
  71 void bar1() { fprintf(stderr, "bar1\n"); }
  72 void bar2() { fprintf(stderr, "bar2\n"); }
  73 void bar3() { fprintf(stderr, "bar3\n"); }
  74 #endif
  75
  76 #if defined(MAIN)
  77 int main(int argc, char **argv) {
  78   switch (argc) {
  79     case 1:
  80       break;
  81     case 2:
  82       foo1();
  83       foo2();
  84       break;
  85     case 3:
  86       bar1();
  87       bar2();
  88       bar3();
  89       break;
  90   }
  91 }
  92 #endif