tests/buf/oom.c

   1 #include "clar_libgit2.h"
   2 #include "buffer.h"
   3
   4 #if defined(GIT_ARCH_64)
   5 #define TOOBIG 0xffffffffffffff00
   6 #else
   7 #define TOOBIG 0xffffff00
   8 #endif
   9
  10 /**
  11  * If we make a ridiculously large request the first time we
  12  * actually allocate some space in the git_buf, the realloc()
  13  * will fail.  And because the git_buf_grow() wrapper always
  14  * sets mark_oom, the code in git_buf_try_grow() will free
  15  * the internal buffer and set it to git_buf__oom.
  16  *
  17  * We initialized the internal buffer to (the static variable)
  18  * git_buf__initbuf.  The purpose of this test is to make sure
  19  * that we don't try to free the static buffer.
  20  */
  21 void test_buf_oom__grow(void)
  22 {
  23         git_buf buf = GIT_BUF_INIT;
  24
  25         git_buf_clear(&buf);
  26
  27         cl_assert(git_buf_grow(&buf, TOOBIG) == -1);
  28         cl_assert(git_buf_oom(&buf));
  29
  30         git_buf_free(&buf);
  31 }