41 строка
721 B
Plaintext
41 строка
721 B
Plaintext
#include <setjmp.h>
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#include <stdio.h>
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typedef struct {
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jmp_buf* jmp;
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} jmp_state;
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void second_func(jmp_state* s);
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void first_func(jmp_state* s) {
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jmp_buf* prev_jmp = s->jmp;
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jmp_buf c_jmp;
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volatile int once = 0;
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if (setjmp(c_jmp) == 0) {
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printf("Normal execution path of first function!\n");
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s->jmp = &c_jmp;
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second_func(s);
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} else {
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printf("Exception execution path of first function! %d\n", once);
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if (!once) {
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printf("Calling longjmp the second time!\n");
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once = 1;
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longjmp(*(s->jmp), 1);
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}
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}
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}
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void second_func(jmp_state* s) { longjmp(*(s->jmp), 1); }
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int main(int argc, char* argv[]) {
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jmp_state s;
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s.jmp = NULL;
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first_func(&s);
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return 0;
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}
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