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// RUN: %target-swift-frontend -module-name=test -emit-sil %s -O | %FileCheck %s --check-prefix=CHECK --check-prefix=DEFAULT
// RUN: %target-swift-frontend -module-name=test -enable-move-inout-stack-protector -emit-sil %s -O -enable-stack-protector | %FileCheck %s --check-prefix=CHECK --check-prefix=MOVE
// REQUIRES: swift_in_compiler
@_silgen_name("potentiallyBadCFunction")
func potentiallyBadCFunction(_ arg: UnsafePointer<Int>)
// CHECK-LABEL: sil [stack_protection] @$s4test20overflowInCFunction1yyF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test20overflowInCFunction1yyF'
public func overflowInCFunction1() {
var x = 0
withUnsafeMutablePointer(to: &x) {
potentiallyBadCFunction($0)
}
}
// CHECK-LABEL: sil @$s4test19unprotectedOverflowyyF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test19unprotectedOverflowyyF'
public func unprotectedOverflow() {
var x = 0
_withUnprotectedUnsafeMutablePointer(to: &x) {
potentiallyBadCFunction($0)
}
}
// CHECK-LABEL: sil [stack_protection] @$s4test23overflowWithUnsafeBytesyyF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test23overflowWithUnsafeBytesyyF'
public func overflowWithUnsafeBytes() {
var x = 0
withUnsafeBytes(of: &x) {
potentiallyBadCFunction($0.bindMemory(to: Int.self).baseAddress!)
}
}
// CHECK-LABEL: sil [stack_protection] @$s4test31owerflowWithUnsafeBorrowedBytes5valueySi_tF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test31owerflowWithUnsafeBorrowedBytes5valueySi_tF'
public func owerflowWithUnsafeBorrowedBytes(value: Int) {
withUnsafeBytes(of: value) {
potentiallyBadCFunction($0.bindMemory(to: Int.self).baseAddress!)
}
}
// CHECK-LABEL: sil @$s4test9onlyLoads5valueS2i_tF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test9onlyLoads5valueS2i_tF'
public func onlyLoads(value: Int) -> Int {
withUnsafeBytes(of: value) {
$0.load(as: Int.self)
}
}
// CHECK-LABEL: sil @$s4test22unprotectedUnsafeBytesyyF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test22unprotectedUnsafeBytesyyF'
public func unprotectedUnsafeBytes() {
var x = 0
_withUnprotectedUnsafeBytes(of: &x) {
potentiallyBadCFunction($0.bindMemory(to: Int.self).baseAddress!)
}
}
// CHECK-LABEL: sil @$s4test29unprotectedUnsafeMutableBytesyyF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test29unprotectedUnsafeMutableBytesyyF'
public func unprotectedUnsafeMutableBytes() {
var x = 0
_withUnprotectedUnsafeMutableBytes(of: &x) {
potentiallyBadCFunction($0.bindMemory(to: Int.self).baseAddress!)
}
}
// CHECK-LABEL: sil [stack_protection] @$s4test20overflowInCFunction2yyF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test20overflowInCFunction2yyF'
public func overflowInCFunction2() {
var x = 0
potentiallyBadCFunction(&x)
}
// CHECK-LABEL: sil hidden [noinline] @$s4test20inoutWithKnownCalleryySizF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test20inoutWithKnownCalleryySizF'
@inline(never)
func inoutWithKnownCaller(_ x: inout Int) {
withUnsafeMutablePointer(to: &x) {
$0[1] = 0
}
}
// CHECK-LABEL: sil [stack_protection] @$s4test24callOverflowInoutPointeryyF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test24callOverflowInoutPointeryyF'
public func callOverflowInoutPointer() {
var x = 27
inoutWithKnownCaller(&x)
}
// DEFAULT-LABEL: sil @$s4test22inoutWithUnknownCalleryySizF
// MOVE-LABEL: sil [stack_protection] @$s4test22inoutWithUnknownCalleryySizF
// MOVE: copy_addr [take] {{.*}} to [init]
// MOVE: copy_addr [take] {{.*}} to [init]
// DEFAULT-NOT: copy_addr
// CHECK: } // end sil function '$s4test22inoutWithUnknownCalleryySizF'
public func inoutWithUnknownCaller(_ x: inout Int) {
withUnsafeMutablePointer(to: &x) {
$0[1] = 0
}
}
// CHECK-LABEL: sil [stack_protection] @$s4test0A29WithUnsafeTemporaryAllocationyyF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test0A29WithUnsafeTemporaryAllocationyyF'
public func testWithUnsafeTemporaryAllocation() {
withUnsafeTemporaryAllocation(of: Int.self, capacity: 10) {
potentiallyBadCFunction($0.baseAddress!)
}
}
// CHECK-LABEL: sil @$s4test13loadUnalignedySiSVF
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test13loadUnalignedySiSVF'
public func loadUnaligned(_ urp: UnsafeRawPointer) -> Int {
return urp.loadUnaligned(as: Int.self)
}
// CHECK-LABEL: sil @$s4test19storeBytesToPointeryySv_SitF :
// CHECK-NOT: copy_addr
// CHECK: } // end sil function '$s4test19storeBytesToPointeryySv_SitF'
public func storeBytesToPointer(_ p: UnsafeMutableRawPointer, _ i: Int) {
p.storeBytes(of: i, as: Int.self)
}
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