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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
3763d0130a
This is temporary: eventually per the design we should be forming integer literals whose types reflect their values. But for now we should ensure that values fit within their types. This also fixes canonicalization of integer constants and hence of array types, because we no longer have multiple different representations of each `i32` value depending on the bit-width used for the literal.
45 lines
1.9 KiB
Plaintext
45 lines
1.9 KiB
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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// AUTOUPDATE
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// TODO: Once we preserve the full value of integer literals in SemIR, check
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// that we reject the array bound being too large.
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// CHECK:STDERR: fail_bound_overflow.carbon:[[@LINE+4]]:14: ERROR: Integer literal with value 39999999999999999993 does not fit in i32.
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// CHECK:STDERR: var a: [i32; 39999999999999999993];
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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var a: [i32; 39999999999999999993];
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// CHECK:STDERR: fail_bound_overflow.carbon:[[@LINE+7]]:9: ERROR: Cannot implicitly convert from `i32` to `type`.
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// CHECK:STDERR: var b: [1; 39999999999999999993];
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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// CHECK:STDERR: fail_bound_overflow.carbon:[[@LINE+3]]:12: ERROR: Integer literal with value 39999999999999999993 does not fit in i32.
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// CHECK:STDERR: var b: [1; 39999999999999999993];
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
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var b: [1; 39999999999999999993];
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// CHECK:STDOUT: --- fail_bound_overflow.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: i32 = int_literal 1 [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace [template] {
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// CHECK:STDOUT: .a = %a
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// CHECK:STDOUT: .b = %b
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %.loc14: type = array_type <error>, i32 [template = <error>]
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// CHECK:STDOUT: %a.var: ref <error> = var a
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// CHECK:STDOUT: %a: ref <error> = bind_name a, %a.var
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// CHECK:STDOUT: %.loc23_9: i32 = int_literal 1 [template = constants.%.1]
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// CHECK:STDOUT: %.loc23_32: type = array_type <error>, <error> [template = <error>]
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// CHECK:STDOUT: %b.var: ref <error> = var b
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// CHECK:STDOUT: %b: ref <error> = bind_name b, %b.var
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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