tree ad1ac83d919b45f371157cd98610b86da33c569e
parent c4b0b0d924c6f35afe85bd2184de91452d010aae
author Wan-Teh Chang <wtc@google.com> 1531959533 -0700
committer Wan-Teh Chang <wtc@google.com> 1531967535 +0000

Revert 8f44a1dfacfde9ec4ab1dc5fc3bbc0b0b5bd2fba.

The man page of longjmp says:
  https://en.cppreference.com/w/c/program/longjmp

  If the function that called setjmp has exited (whether by return or by
  a different longjmp higher up the stack), the behavior is undefined.
  In other words, only long jumps up the call stack are allowed.

Therefore, we cannot call setjmp() in a call_setjmp() function that
immediately returns.

Note: The example code in the same man page also says:
  local vars must be volatile for setjmp
I will deal with that separately.

BUG=oss-fuzz:9463

Change-Id: I7419122f68f67ab4e27be6636d3f8a2d926ee460