bolt/test/runtime/iplt.c

   1 // This test checks that the ifuncs works after bolt.
   2
   3 // RUN: %clang %cflags -no-pie %s -fuse-ld=lld \
   4 // RUN:    -o %t.exe -Wl,-q
   5 // RUN: llvm-bolt %t.exe -o %t.bolt.exe --use-old-text=0 --lite=0
   6 // RUN: %t.bolt.exe  | FileCheck %s
   7
   8 // CHECK: foo
   9
  10 #include <stdio.h>
  11 #include <string.h>
  12
  13 static void foo() { printf("foo\n"); }
  14
  15 static void *resolver_foo(void) { return foo; }
  16
  17 __attribute__((ifunc("resolver_foo"))) void ifoo();
  18
  19 static void *resolver_memcpy(void) { return memcpy; }
  20
  21 __attribute__((ifunc("resolver_memcpy"))) void *
  22 imemcpy(void *dest, const void *src, size_t n);
  23
  24 int main() {
  25   int a = 0xdeadbeef, b = 0;
  26   imemcpy(&b, &a, sizeof(b));
  27   if (a != b)
  28     return -1;
  29
  30   ifoo();
  31 }