Files
carbon-lang/toolchain/check/testdata/pointer/fail_deref_error.carbon
T
Richard Smith 05cc09daca Fix cross-package signature mismatches. (#7232)
Fixes link failures when referencing a symbol involving a fingerprint
from a different package.

Previously we included the `Namespace`'s `import_id` as part of its
fingerprint, which caused local and imported namespaces to get different
fingerprints. We now store the `import_id` on the `NameScope` instead of
on the `Namespace` inst to avoid this problem.

Also, when we reach a package-level `NameScopeId`, consistently
fingerprint it as a (package name, library name) pair. Previously the
fingerprinting depended on whether it was imported or not, as an
imported `NameScopeId` had a parent scope (the current package). We need
to include the library name here so that private entities with the same
name in different libraries have different fingerprints.
2026-05-21 00:02:29 +00:00

75 lines
3.6 KiB
Plaintext

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/pointer/fail_deref_error.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/pointer/fail_deref_error.carbon
// CHECK:STDERR: fail_deref_error.carbon:[[@LINE+4]]:15: error: name `undeclared` not found [NameNotFound]
// CHECK:STDERR: let n: i32 = *undeclared;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
let n: i32 = *undeclared;
// CHECK:STDERR: fail_deref_error.carbon:[[@LINE+4]]:15: error: name `undeclared` not found [NameNotFound]
// CHECK:STDERR: let n2: i32 = undeclared->foo;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
let n2: i32 = undeclared->foo;
// CHECK:STDOUT: --- fail_deref_error.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %pattern_type.c6b: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .n = %n
// CHECK:STDOUT: .undeclared = <poisoned>
// CHECK:STDOUT: .n2 = %n2
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %n.patt: %pattern_type.c6b = value_binding_pattern n [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %i32.loc19: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %n: %i32 = value_binding n, <error> [concrete = <error>]
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %n2.patt: %pattern_type.c6b = value_binding_pattern n2 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %i32.loc24: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %n2: %i32 = value_binding n2, <error> [concrete = <error>]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %undeclared.ref.loc19: <error> = name_ref undeclared, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc19: ref <error> = deref <error> [concrete = <error>]
// CHECK:STDOUT: %undeclared.ref.loc24: <error> = name_ref undeclared, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc24: ref <error> = deref <error> [concrete = <error>]
// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: