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// RUN: %clang_esan_wset -O0 %s -o %t 2>&1
// RUN: %env_esan_opts="verbosity=1 record_snapshots=0" %run %t %t 2>&1 | FileCheck %s
// Stucks at init and no clone feature equivalent.
// UNSUPPORTED: freebsd
#include <assert.h>
#include <stdio.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
static void testChildStackLimit(rlim_t StackLimit, char *ToRun) {
int Res;
struct rlimit Limit;
Limit.rlim_cur = RLIM_INFINITY;
Limit.rlim_max = RLIM_INFINITY;
Res = setrlimit(RLIMIT_STACK, &Limit);
if (Res != 0) {
// Probably our environment had a large limit and we ourselves got
// re-execed and can no longer raise our limit.
// We have to bail and emulate the regular test.
// We'd prefer to have branches in our FileCheck output to ensure the
// initial program was re-execed but this is the best we can do for now.
fprintf(stderr, "in esan::initializeLibrary\n");
fprintf(stderr, "==1234==The stack size limit is beyond the maximum supported.\n");
fprintf(stderr, "Re-execing with a stack size below 1TB.\n");
fprintf(stderr, "in esan::initializeLibrary\n");
fprintf(stderr, "done\n");
fprintf(stderr, "in esan::finalizeLibrary\n");
return;
}
pid_t Child = fork();
assert(Child >= 0);
if (Child > 0) {
pid_t WaitRes = waitpid(Child, NULL, 0);
assert(WaitRes == Child);
} else {
char *Args[2];
Args[0] = ToRun;
Args[1] = NULL;
Res = execv(ToRun, Args);
assert(0); // Should not be reached.
}
}
int main(int argc, char *argv[]) {
// The path to the program to exec must be passed in the first time.
if (argc == 2) {
fprintf(stderr, "Testing child with infinite stack\n");
testChildStackLimit(RLIM_INFINITY, argv[1]);
fprintf(stderr, "Testing child with 1TB stack\n");
testChildStackLimit(1ULL << 40, argv[1]);
}
fprintf(stderr, "done\n");
// CHECK: in esan::initializeLibrary
// CHECK: Testing child with infinite stack
// CHECK-NEXT: in esan::initializeLibrary
// CHECK-NEXT: =={{[0-9:]+}}==The stack size limit is beyond the maximum supported.
// CHECK-NEXT: Re-execing with a stack size below 1TB.
// CHECK-NEXT: in esan::initializeLibrary
// CHECK: done
// CHECK: in esan::finalizeLibrary
// CHECK: Testing child with 1TB stack
// CHECK-NEXT: in esan::initializeLibrary
// CHECK-NEXT: =={{[0-9:]+}}==The stack size limit is beyond the maximum supported.
// CHECK-NEXT: Re-execing with a stack size below 1TB.
// CHECK-NEXT: in esan::initializeLibrary
// CHECK: done
// CHECK-NEXT: in esan::finalizeLibrary
// CHECK: done
// CHECK-NEXT: in esan::finalizeLibrary
return 0;
}
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