Re: [PATCH v2 2/2] test: unit test for longjmp

On Mär 22 2021, Sean Anderson wrote:

int test_longjmp_ret(int i) { jmp_buf env; int ret; int foo = i;

 ret = setjmp(env);
 if (ret)
     return foo;
 foo = 0x1000;
 longjmp(env, i);
 /* We should not arrive here */
 return foo;

This is undefined. When modifying a non-volatile auto variable between setjmp and longjmp, there is no requirement that the value is preserved.

Andreas.