src/compiler-rt/test/asan/TestCases/Linux/asan_prelink_test.cc

   1 // Test if asan works with prelink.
   2 // It does not actually use prelink, but relies on ld's flag -Ttext-segment
   3 // or gold's flag -Ttext (we try the first flag first, if that fails we
   4 // try the second flag).
   5 //
   6 // RUN: %clangxx_asan -c %s -o %t.o
   7 // RUN: %clangxx_asan -DBUILD_SO=1 -fPIC -shared %s -o %t.so -Wl,-Ttext-segment=0x3600000000 ||\
   8 // RUN: %clangxx_asan -DBUILD_SO=1 -fPIC -shared %s -o %t.so -Wl,-Ttext=0x3600000000
   9 // RUN: %clangxx_asan %t.o %t.so -Wl,-R. -o %t
  10 // RUN: %env_asan_opts=verbosity=1 %run %t 2>&1 | FileCheck %s
  11
  12 // GNU driver doesn't handle .so files properly.
  13 // REQUIRES: x86_64-target-arch, Clang
  14 #if BUILD_SO
  15 int G;
  16 int *getG() {
  17   return &G;
  18 }
  19 #else
  20 #include <stdio.h>
  21 extern int *getG();
  22 int main(int argc, char **argv) {
  23   long p = (long)getG();
  24   printf("SO mapped at %lx\n", p & ~0xffffffffUL);
  25   *getG() = 0;
  26 }
  27 #endif
  28 // CHECK: 0x003000000000, 0x004fffffffff{{.*}} MidMem
  29 // CHECK: SO mapped at 3600000000