ref: db565b93a3e8db0e72be663d3cb6560ab96fc64f
dir: /tests/libc/execute/0007-signal.c/
#include <assert.h> #include <setjmp.h> #include <signal.h> #include <stdio.h> sig_atomic_t abrt, fpe, iint, segv, term, def; jmp_buf recover; /* output: test 1 test 2 test 3 test 4 end: */ void handler1(int sig) { switch (sig) { case SIGABRT: abrt = 1; break; case SIGFPE: fpe = 1; break; case SIGINT: iint = 1; break; case SIGSEGV: segv = 1; break; case SIGTERM: term = 1; break; default: def = 1; break; } } void handler2(int sig) { switch (sig) { case SIGABRT: abrt = 1; break; case SIGFPE: fpe = 1; break; case SIGINT: iint = 1; break; case SIGSEGV: segv = 1; break; case SIGTERM: term = 1; break; default: def = 1; break; } longjmp(recover, 1); } void test1() { puts("test 1"); assert(signal(SIGABRT, handler1) == SIG_DFL); assert(signal(SIGFPE, handler1) == SIG_DFL); assert(signal(SIGINT, handler1) == SIG_DFL); assert(signal(SIGSEGV, handler1) == SIG_DFL); assert(signal(SIGTERM, handler1) == SIG_DFL); } void test2() { puts("test 2"); term = abrt = fpe = iint = segv = 0; assert(signal(SIGABRT, handler1) == handler1); assert(signal(SIGFPE, handler1) == handler1); assert(signal(SIGINT, handler1) == handler1); assert(signal(SIGSEGV, handler1) == handler1); assert(signal(SIGTERM, handler1) == handler1); assert(raise(SIGABRT) != -1); assert(raise(SIGFPE) != -1); assert(raise(SIGINT) != -1); assert(raise(SIGSEGV) != -1); assert(raise(SIGTERM) != -1); if (!abrt || !fpe || !iint || !segv || !term) printf("a handled signal was missed: %d %d %d %d %d\n", abrt, fpe, iint, segv, term); if (def) puts("a wrong signal was received"); } void test3() { puts("test 3"); def = abrt = term = fpe = iint = segv = 0; assert(signal(SIGABRT, SIG_IGN) == handler1); assert(signal(SIGFPE, SIG_IGN) == handler1); assert(signal(SIGINT, SIG_IGN) == handler1); assert(signal(SIGSEGV, SIG_IGN) == handler1); assert(signal(SIGTERM, SIG_IGN) == handler1); assert(raise(SIGABRT) != -1); assert(raise(SIGFPE) != -1); assert(raise(SIGINT) != -1); assert(raise(SIGSEGV) != -1); assert(raise(SIGTERM) != -1); if (abrt || fpe || iint || segv || term) printf("a handled signal was received: %d %d %d %d %d\n", abrt, fpe, iint, segv, term); if (def) puts("a wrong signal was received"); } void test4() { puts("test 4"); def = abrt = term = fpe = iint = segv = 0; assert(signal(SIGABRT, handler2) == SIG_IGN); assert(signal(SIGFPE, handler2) == SIG_IGN); assert(signal(SIGINT, handler2) == SIG_IGN); assert(signal(SIGSEGV, handler2) == SIG_IGN); assert(signal(SIGTERM, handler2) == SIG_IGN); if (!setjmp(recover)) assert(raise(SIGABRT) != -1); if (!setjmp(recover)) assert(raise(SIGFPE) != -1); if (!setjmp(recover)) assert(raise(SIGINT) != -1); if (!setjmp(recover)) assert(raise(SIGSEGV) != -1); if (!setjmp(recover)) assert(raise(SIGTERM) != -1); if (!abrt || !fpe || !iint || !segv || !term) printf("a handled signal was missed: %d %d %d %d %d\n", abrt, fpe, iint, segv, term); if (def) puts("a wrong signal was received"); } int main() { assert(SIG_ERR != SIG_IGN && SIG_ERR != SIG_DFL); test1(); test2(); test3(); test4(); return; }