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Revert "Frontend: Require explicit language mode when emitting swiftinterfaces."

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This reverts commit 9067051c29.
This commit is contained in:
Allan Shortlidge
2025-09-25 08:02:18 -07:00
parent 8f7af45115
commit fba664c082
2 changed files with 6 additions and 4 deletions
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6
lib/Frontend/CompilerInvocation.cpp
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@@ -1040,8 +1040,10 @@ static bool ParseLangArgs(LangOptions &Opts, ArgList &Args,
if (!isValid)
diagnoseSwiftVersion(vers, A, Args, Diags);
} else if (FrontendOpts.InputsAndOutputs.hasModuleInterfaceOutputPath()) {
Diags.diagnose({}, diag::error_module_interface_requires_language_mode);
HadError = true;
Diags.diagnose({}, diag::error_module_interface_requires_language_mode)
.limitBehavior(DiagnosticBehavior::Warning);
// FIXME: Make this an error again (rdar://145168219)
// HadError = true;
}
if (auto A = Args.getLastArg(OPT_package_description_version)) {

4
test/ModuleInterface/language_mode.swift
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@@ -1,11 +1,11 @@
// RUN: %empty-directory(%t)
// RUN: not %swift_frontend_plain -target %target-swift-5.1-abi-triple %s \
// RUN: %swift_frontend_plain -target %target-swift-5.1-abi-triple %s \
// RUN: -enable-library-evolution -module-name Test \
// RUN: -emit-module-interface-path %t.swiftinterface \
// RUN: -emit-module -o /dev/null 2>&1 | %FileCheck %s
// CHECK: <unknown>:0: error: emitting module interface files requires '-language-mode'
// CHECK: <unknown>:0: warning: emitting module interface files requires '-language-mode'
// RUN: %swift_frontend_plain -target %target-swift-5.1-abi-triple %s \
// RUN: -enable-library-evolution -module-name Test \