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https://github.com/carbon-language/carbon-lang.git
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Zenong ZhangandJon Ross-Perkins
52ee050019
Allows unformed state for local variables. Reports a run-time error when an unformed local variable is used. - Added declaration without initialization for local variables in the parser. - Made the init expression of VariableDefinition optional. - Expanded (alive, dead) to (uninitialized, alive, dead) in the Heap. Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
19 lines
757 B
Plaintext
19 lines
757 B
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// RUN: %{not} %{explorer} %s 2>&1 | \
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// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
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// RUN: %{not} %{explorer} --parser_debug --trace_file=- %s 2>&1 | \
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// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes %s
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// AUTOUPDATE: %{explorer} %s
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package ExplorerTest api;
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fn Main() -> i32 {
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var (x: i32, y: i32);
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x = 1;
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// CHECK: RUNTIME ERROR: {{.*}}/explorer/testdata/uninitialized/fail_uninitialized_pattern.carbon:[[@LINE+1]]: undefined behavior: access to uninitialized value Uninit<Placeholder<y>>
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return y;
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}
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