0a088ead85
Fix a few bugs where we would fail to properly determine header to module correspondence when determining whether to suggest a #include or import, and suggest a #include more often in language modes where there is no import syntax. Generally, if the target is in a header with include guards or #pragma once, we should suggest either #including or importing that header, and not importing a module that happens to textually include it. In passing, improve the notes we attach to the corresponding diagnostics: calling an entity that we couldn't see "previous" is confusing.
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
// RUN: echo 'export module foo; export int n;' > %t.cppm
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// RUN: %clang_cc1 -std=c++2a %t.cppm -emit-module-interface -o %t.pcm
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// RUN: %clang_cc1 -std=c++2a -fmodule-file=%t.pcm -verify -DMODE=0 %s
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// RUN: %clang_cc1 -std=c++2a -fmodule-file=%t.pcm -verify -DMODE=1 %s
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// RUN: %clang_cc1 -std=c++2a -fmodule-file=%t.pcm -verify -DMODE=2 %s
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// RUN: %clang_cc1 -std=c++2a -fmodule-file=%t.pcm -verify -DMODE=3 %s
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// RUN: %clang_cc1 -std=c++2a -fmodule-file=%t.pcm -verify -DMODE=4 %s
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// RUN: %clang_cc1 -std=c++2a -fmodule-file=%t.pcm -verify -DMODE=5 %s
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#if MODE == 0
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// no module declaration
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#elif MODE == 1
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// expected-no-diagnostics
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module foo;
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#define IMPORTED
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#elif MODE == 2
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export module foo; // expected-error {{redefinition of module 'foo'}}
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// expected-note-re@* {{module loaded from '{{.*}}.pcm'}}
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#define IMPORTED
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#elif MODE == 3
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export module bar;
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#elif MODE == 4
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module foo:bar; // expected-error {{not yet supported}}
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#define IMPORTED // FIXME
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#elif MODE == 5
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export module foo:bar; // expected-error {{not yet supported}} expected-error {{redefinition}} expected-note@* {{loaded from}}
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#define IMPORTED // FIXME
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#endif
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int k = n;
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#ifndef IMPORTED
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// expected-error@-2 {{declaration of 'n' must be imported from module 'foo' before it is required}}
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// expected-note@* {{not visible}}
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#endif
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