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// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend -enable-experimental-feature Extern -enable-experimental-feature Embedded -no-allocations %s -c -o %t/a.o
// RUN: grep DEP\: %s | sed 's#// DEP\: ##' | sort > %t/allowed-dependencies.txt
// Linux/ELF doesn't use the "_" prefix in symbol mangling.
// RUN: if [ %target-os == "linux-gnu" ]; then sed -E -i -e 's/^_(.*)$/\1/' %t/allowed-dependencies.txt; fi
// RUN: %llvm-nm --undefined-only --format=just-symbols %t/a.o | sort | tee %t/actual-dependencies.txt
// Fail if there is any entry in actual-dependencies.txt that's not in allowed-dependencies.txt
// RUN: test -z "`comm -13 %t/allowed-dependencies.txt %t/actual-dependencies.txt`"
// DEP: ___stack_chk_fail
// DEP: ___stack_chk_guard
// DEP: _memset
// DEP: _putchar
// RUN: %target-clang -x c -c %S/Inputs/print.c -o %t/print.o
// RUN: %target-clang %t/a.o %t/print.o -o %t/a.out
// RUN: %target-run %t/a.out | %FileCheck %s
// REQUIRES: swift_in_compiler
// REQUIRES: executable_test
// REQUIRES: optimized_stdlib
// REQUIRES: OS=macosx || OS=linux-gnu
// UNSUPPORTED: OS=linux-gnu && CPU=aarch64
@_silgen_name("putchar")
@discardableResult
func putchar(_: CInt) -> CInt
public func print(_ s: StaticString, terminator: StaticString = "\n") {
var p = s.utf8Start
while p.pointee != 0 {
putchar(CInt(p.pointee))
p += 1
}
p = terminator.utf8Start
while p.pointee != 0 {
putchar(CInt(p.pointee))
p += 1
}
}
print("Hello Embedded Swift!") // CHECK: Hello Embedded Swift!
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