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RedBear-OS/local/recipes/dev/libclc/source/clang/test/CodeGenObjC/arc-precise-lifetime.m
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class) 
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

260 lines
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -O2 -disable-llvm-passes -o - %s | FileCheck %s
#define PRECISE_LIFETIME __attribute__((objc_precise_lifetime))
id test0_helper(void) __attribute__((ns_returns_retained));
void test0(void) {
PRECISE_LIFETIME id x = test0_helper();
x = 0;
// CHECK: [[X:%.*]] = alloca ptr
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[X]])
// CHECK-NEXT: [[CALL:%.*]] = call ptr @test0_helper()
// CHECK-NEXT: store ptr [[CALL]], ptr [[X]]
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[X]]
// CHECK-NEXT: store ptr null, ptr [[X]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T1]]) [[NUW:#[0-9]+]]
// CHECK-NOT: clang.imprecise_release
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[X]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T1]]) [[NUW:#[0-9]+]]
// CHECK-NOT: clang.imprecise_release
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[X]])
// CHECK-NEXT: ret void
}
// precise lifetime should suppress extension
// should work for calls via property syntax, too
@interface Test1
- (char*) interior __attribute__((objc_returns_inner_pointer));
// Should we allow this on properties? Yes!
@property (nonatomic, readonly) char * PropertyReturnsInnerPointer __attribute__((objc_returns_inner_pointer));
@end
extern Test1 *test1_helper(void);
// CHECK-LABEL: define{{.*}} void @test1a_message()
void test1a_message(void) {
// CHECK: [[PTR:%.*]] = alloca ptr, align 8
// CHECK: [[C:%.*]] = alloca ptr, align 8
// CHECK: call void @llvm.lifetime.start.p0(i64 8, ptr [[PTR]])
// CHECK: [[T0:%.*]] = call ptr @test1_helper() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[C]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retainAutorelease(ptr [[T0]])
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[T6:%.*]] = call ptr
// CHECK-NEXT: store ptr [[T6]], ptr
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[C]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]], !clang.imprecise_release
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PTR]])
// CHECK-NEXT: ret void
Test1 *ptr = test1_helper();
char *c = [(ptr) interior];
}
// CHECK-LABEL: define{{.*}} void @test1a_property()
void test1a_property(void) {
// CHECK: [[PTR:%.*]] = alloca ptr, align 8
// CHECK: [[C:%.*]] = alloca ptr, align 8
// CHECK: call void @llvm.lifetime.start.p0(i64 8, ptr [[PTR]])
// CHECK: [[T0:%.*]] = call ptr @test1_helper() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[C]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retainAutorelease(ptr [[T0]])
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[T6:%.*]] = call ptr
// CHECK-NEXT: store ptr [[T6]], ptr
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[C]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]], !clang.imprecise_release
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PTR]])
// CHECK-NEXT: ret void
Test1 *ptr = test1_helper();
char *c = ptr.interior;
}
// CHECK-LABEL: define{{.*}} void @test1b_message()
void test1b_message(void) {
// CHECK: [[PTR:%.*]] = alloca ptr, align 8
// CHECK: [[C:%.*]] = alloca ptr, align 8
// CHECK: call void @llvm.lifetime.start.p0(i64 8, ptr [[PTR]])
// CHECK: [[T0:%.*]] = call ptr @test1_helper() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[C]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[T3:%.*]] = call ptr
// CHECK-NEXT: store ptr [[T3]], ptr
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[C]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]]
// CHECK-NOT: clang.imprecise_release
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PTR]])
// CHECK-NEXT: ret void
PRECISE_LIFETIME Test1 *ptr = test1_helper();
char *c = [ptr interior];
}
// CHECK-LABEL: define{{.*}} void @test1b_property()
void test1b_property(void) {
// CHECK: [[PTR:%.*]] = alloca ptr, align 8
// CHECK: [[C:%.*]] = alloca ptr, align 8
// CHECK: call void @llvm.lifetime.start.p0(i64 8, ptr [[PTR]])
// CHECK: [[T0:%.*]] = call ptr @test1_helper() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[C]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[T3:%.*]] = call ptr
// CHECK-NEXT: store ptr [[T3]], ptr
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[C]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]]
// CHECK-NOT: clang.imprecise_release
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PTR]])
// CHECK-NEXT: ret void
PRECISE_LIFETIME Test1 *ptr = test1_helper();
char *c = ptr.interior;
}
// CHECK-LABEL: define{{.*}} void @test1c_message()
void test1c_message(void) {
// CHECK: [[PTR:%.*]] = alloca ptr, align 8
// CHECK: [[PC:%.*]] = alloca ptr, align 8
// CHECK: call void @llvm.lifetime.start.p0(i64 8, ptr [[PTR]])
// CHECK: [[T0:%.*]] = call ptr @test1_helper() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[PC]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retainAutorelease(ptr [[T0]])
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[T6:%.*]] = call ptr
// CHECK-NEXT: store ptr [[T6]], ptr
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PC]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]], !clang.imprecise_release
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PTR]])
// CHECK-NEXT: ret void
Test1 *ptr = test1_helper();
char *pc = [ptr PropertyReturnsInnerPointer];
}
// CHECK-LABEL: define{{.*}} void @test1c_property()
void test1c_property(void) {
// CHECK: [[PTR:%.*]] = alloca ptr, align 8
// CHECK: [[PC:%.*]] = alloca ptr, align 8
// CHECK: call void @llvm.lifetime.start.p0(i64 8, ptr [[PTR]])
// CHECK: [[T0:%.*]] = call ptr @test1_helper() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[PC]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.retainAutorelease(ptr [[T0]])
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[T6:%.*]] = call ptr
// CHECK-NEXT: store ptr [[T6]], ptr
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PC]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]], !clang.imprecise_release
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PTR]])
// CHECK-NEXT: ret void
Test1 *ptr = test1_helper();
char *pc = ptr.PropertyReturnsInnerPointer;
}
// CHECK-LABEL: define{{.*}} void @test1d_message()
void test1d_message(void) {
// CHECK: [[PTR:%.*]] = alloca ptr, align 8
// CHECK: [[PC:%.*]] = alloca ptr, align 8
// CHECK: call void @llvm.lifetime.start.p0(i64 8, ptr [[PTR]])
// CHECK: [[T0:%.*]] = call ptr @test1_helper() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[PC]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[SEL:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[CALL1:%.*]] = call ptr @objc_msgSend(ptr noundef [[T0]], ptr noundef [[SEL]])
// CHECK-NEXT: store ptr [[CALL1]], ptr
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PC]])
// CHECK-NEXT: [[NINE:%.*]] = load ptr, ptr
// CHECK-NEXT: call void @llvm.objc.release(ptr [[NINE]])
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PTR]])
// CHECK-NEXT: ret void
PRECISE_LIFETIME Test1 *ptr = test1_helper();
char *pc = [ptr PropertyReturnsInnerPointer];
}
// CHECK-LABEL: define{{.*}} void @test1d_property()
void test1d_property(void) {
// CHECK: [[PTR:%.*]] = alloca ptr, align 8
// CHECK: [[PC:%.*]] = alloca ptr, align 8
// CHECK: call void @llvm.lifetime.start.p0(i64 8, ptr [[PTR]])
// CHECK: [[T0:%.*]] = call ptr @test1_helper() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(ptr [[T0]])
// CHECK-NEXT: store ptr [[T0]]
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[PC]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: [[SEL:%.*]] = load ptr, ptr @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[CALL1:%.*]] = call ptr @objc_msgSend(ptr noundef [[T0]], ptr noundef [[SEL]])
// CHECK-NEXT: store ptr [[CALL1]], ptr
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PC]])
// CHECK-NEXT: [[NINE:%.*]] = load ptr, ptr
// CHECK-NEXT: call void @llvm.objc.release(ptr [[NINE]])
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[PTR]])
// CHECK-NEXT: ret void
PRECISE_LIFETIME Test1 *ptr = test1_helper();
char *pc = ptr.PropertyReturnsInnerPointer;
}
@interface Test2 {
@public
id ivar;
}
@end
// CHECK-LABEL: define{{.*}} void @test2(
void test2(Test2 *x) {
x->ivar = 0;
// CHECK: [[X:%.*]] = alloca ptr
// CHECK-NEXT: [[T1:%.*]] = call ptr @llvm.objc.retain(ptr {{%.*}}) [[NUW]]
// CHECK-NEXT: store ptr [[T1]], ptr [[X]],
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]],
// CHECK-NEXT: [[OFFSET:%.*]] = load i64, ptr @"OBJC_IVAR_$_Test2.ivar"
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds i8, ptr [[T0]], i64 [[OFFSET]]
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr [[T2]],
// CHECK-NEXT: store ptr null, ptr [[T2]],
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T4]]) [[NUW]]
// CHECK-NOT: imprecise
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]], !clang.imprecise_release
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define{{.*}} void @test3(ptr
void test3(PRECISE_LIFETIME id x) {
// CHECK: [[X:%.*]] = alloca ptr,
// CHECK-NEXT: [[T0:%.*]] = call ptr @llvm.objc.retain(ptr {{%.*}}) [[NUW]]
// CHECK-NEXT: store ptr [[T0]], ptr [[X]],
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[X]]
// CHECK-NEXT: call void @llvm.objc.release(ptr [[T0]]) [[NUW]]
// CHECK-NOT: imprecise_release
// CHECK-NEXT: ret void
}
// CHECK: attributes [[NUW]] = { nounwind }
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