2cb2cd242c
C89 allowed a type specifier to be elided with the resulting type being int, aka implicit int behavior. This feature was subsequently removed in C99 without a deprecation period, so implementations continued to support the feature. Now, as with implicit function declarations, is a good time to reevaluate the need for this support. This patch allows -Wimplicit-int to issue warnings in C89 mode (off by default), defaults the warning to an error in C99 through C17, and disables support for the feature entirely in C2x. It also removes a warning about missing declaration specifiers that really was just an implicit int warning in disguise and other minor related cleanups.
49 lines
2.4 KiB
C++
49 lines
2.4 KiB
C++
// Tests for module-declaration syntax.
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//
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// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: echo 'export module x; int a, b;' > %t/x.cppm
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// RUN: echo 'export module x.y; int c;' > %t/x.y.cppm
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//
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -emit-module-interface %t/x.cppm -o %t/x.pcm
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -emit-module-interface -fmodule-file=%t/x.pcm %t/x.y.cppm -o %t/x.y.pcm
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//
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// Module implementation for unknown and known module. (The former is ill-formed.)
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -I%t -fmodule-file=%t/x.y.pcm -verify %s \
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// RUN: -DTEST=1 -DEXPORT= -DMODULE_NAME=z
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -I%t -fmodule-file=%t/x.y.pcm -verify %s \
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// RUN: -DTEST=2 -DEXPORT= -DMODULE_NAME=x
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//
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// Module interface for unknown and known module. (The latter is ill-formed due to
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// redefinition.)
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -I%t -fmodule-file=%t/x.y.pcm -verify %s \
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// RUN: -DTEST=3 -DEXPORT=export -DMODULE_NAME=z
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -I%t -fmodule-file=%t/x.y.pcm -verify %s \
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// RUN: -DTEST=4 -DEXPORT=export -DMODULE_NAME=x
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//
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// Miscellaneous syntax.
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -I%t -fmodule-file=%t/x.y.pcm -verify %s \
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// RUN: -DTEST=7 -DEXPORT=export -DMODULE_NAME='z elderberry'
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -I%t -fmodule-file=%t/x.y.pcm -verify %s \
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// RUN: -DTEST=8 -DEXPORT=export -DMODULE_NAME='z [[]]'
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -I%t -fmodule-file=%t/x.y.pcm -verify %s \
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// RUN: -DTEST=9 -DEXPORT=export -DMODULE_NAME='z [[fancy]]'
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// RUN: %clang_cc1 -std=c++1z -fmodules-ts -I%t -fmodule-file=%t/x.y.pcm -verify %s \
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// RUN: -DTEST=10 -DEXPORT=export -DMODULE_NAME='z [[maybe_unused]]'
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EXPORT module MODULE_NAME;
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#if TEST == 4
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// expected-error@-2 {{redefinition of module 'x'}}
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// expected-note-re@module-declaration.cpp:* {{loaded from '{{.*[/\\]}}x.pcm'}}
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#elif TEST == 7
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// expected-error@-5 {{expected ';'}} expected-error@-5 {{a type specifier is required}}
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#elif TEST == 9
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// expected-warning@-7 {{unknown attribute 'fancy' ignored}}
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#elif TEST == 10
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// expected-error-re@-9 {{'maybe_unused' attribute cannot be applied to a module{{$}}}}
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#elif TEST == 1
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// expected-error@-11 {{definition of module 'z' is not available}}
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#else
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// expected-no-diagnostics
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#endif
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