Index: clang/lib/Serialization/ASTReader.cpp =================================================================== --- clang/lib/Serialization/ASTReader.cpp +++ clang/lib/Serialization/ASTReader.cpp @@ -2750,9 +2750,15 @@ } bool hasErrors = Record[6]; - if (hasErrors && !DisableValidation && !AllowASTWithCompilerErrors) { - Diag(diag::err_pch_with_compiler_errors); - return HadErrors; + if (hasErrors && !DisableValidation) { + // Always rebuild modules from the cache on an error + if (F.Kind == MK_ImplicitModule) + return OutOfDate; + + if (!AllowASTWithCompilerErrors) { + Diag(diag::err_pch_with_compiler_errors); + return HadErrors; + } } if (hasErrors) { Diags.ErrorOccurred = true; Index: clang/test/Modules/Inputs/error/error.h =================================================================== --- clang/test/Modules/Inputs/error/error.h +++ clang/test/Modules/Inputs/error/error.h @@ -2,6 +2,7 @@ @interface Error - (int)method; +- (undefined)method2; undefined @end Index: clang/test/Modules/Inputs/error/module.modulemap =================================================================== --- /dev/null +++ clang/test/Modules/Inputs/error/module.modulemap @@ -0,0 +1,3 @@ +module error { + header "error.h" +} Index: clang/test/Modules/Inputs/module.map =================================================================== --- clang/test/Modules/Inputs/module.map +++ clang/test/Modules/Inputs/module.map @@ -483,4 +483,3 @@ header "template-nontrivial1.h" export * } -module error { header "error.h" } Index: clang/test/Modules/load-module-with-errors.m =================================================================== --- clang/test/Modules/load-module-with-errors.m +++ clang/test/Modules/load-module-with-errors.m @@ -1,25 +1,68 @@ // RUN: rm -rf %t // RUN: mkdir %t +// RUN: mkdir %t/prebuilt -// Write out a module with errors make sure it can be read // RUN: %clang_cc1 -fmodules -fallow-pcm-with-compiler-errors \ -// RUN: -fmodules-cache-path=%t -x objective-c -emit-module \ -// RUN: -fmodule-name=error %S/Inputs/module.map -// RUN: %clang_cc1 -fmodules -fallow-pcm-with-compiler-errors \ -// RUN: -fmodules-cache-path=%t -x objective-c -I %S/Inputs \ -// RUN: -fimplicit-module-maps -ast-print %s | FileCheck %s +// RUN: -fmodule-name=error -o %t/prebuilt/error.pcm \ +// RUN: -x objective-c -emit-module %S/Inputs/error/module.modulemap + +// RUN: %clang_cc1 -fsyntax-only -fmodules -fallow-pcm-with-compiler-errors \ +// RUN: -fprebuilt-module-path=%t/prebuilt -fmodules-cache-path=%t \ +// RUN: -ast-print %s | FileCheck %s +// RUN: %clang_cc1 -fsyntax-only -fmodules \ +// RUN: -fprebuilt-module-path=%t/prebuilt -fmodules-cache-path=%t \ +// RUN: -verify=pcherror %s + +// RUN: %clang_cc1 -fsyntax-only -fmodules -fallow-pcm-with-compiler-errors \ +// RUN: -fmodule-file=error=%t/prebuilt/error.pcm -fmodules-cache-path=%t \ +// RUN: -ast-print %s | FileCheck %s +// RUN: %clang_cc1 -fsyntax-only -fmodules \ +// RUN: -fmodule-file=error=%t/prebuilt/error.pcm -fmodules-cache-path=%t \ +// RUN: -verify=pcherror %s + +// RUN: %clang_cc1 -fsyntax-only -fmodules -fallow-pcm-with-compiler-errors \ +// RUN: -fmodule-file=%t/prebuilt/error.pcm -fmodules-cache-path=%t \ +// RUN: -ast-print %s | FileCheck %s +// RUN: not %clang_cc1 -fsyntax-only -fmodules \ +// RUN: -fmodule-file=%t/prebuilt/error.pcm -fmodules-cache-path=%t \ +// RUN: -verify=pcherror %s + +// Shouldn't build the cached module (that has errors) when not allowing errors +// RUN: not %clang_cc1 -fsyntax-only -fmodules \ +// RUN: -fmodules-cache-path=%t -fimplicit-module-maps -I %S/Inputs/error \ +// RUN: -x objective-c %s +// RUN: find %t -name "error-*.pcm" | not grep error + +// Should build the cached module when allowing errors +// RUN: %clang_cc1 -fsyntax-only -fmodules -fallow-pcm-with-compiler-errors \ +// RUN: -fmodules-cache-path=%t -fimplicit-module-maps -I %S/Inputs/error \ +// RUN: -x objective-c -verify %s +// RUN: find %t -name "error-*.pcm" | grep error + +// Make sure there is still an error after the module is already in the cache +// RUN: %clang_cc1 -fsyntax-only -fmodules -fallow-pcm-with-compiler-errors \ +// RUN: -fmodules-cache-path=%t -fimplicit-module-maps -I %S/Inputs/error \ +// RUN: -x objective-c -verify %s + +// Should rebuild the cached module if it had an error (if it wasn't rebuilt +// the verify would fail as it would be the PCH error instead) +// RUN: %clang_cc1 -fsyntax-only -fmodules \ +// RUN: -fmodules-cache-path=%t -fimplicit-module-maps -I %S/Inputs/error \ +// RUN: -x objective-c -verify %s // allow-pcm-with-compiler-errors should also allow errors in PCH -// RUN: %clang_cc1 -fallow-pcm-with-compiler-errors -x c++ -emit-pch \ -// RUN: -o %t/check.pch %S/Inputs/error.h +// RUN: %clang_cc1 -fallow-pcm-with-compiler-errors -x objective-c \ +// RUN: -o %t/check.pch -emit-pch %S/Inputs/error/error.h -@import error; +// pcherror-error@* {{PCH file contains compiler errors}} +@import error; // expected-error {{could not build module 'error'}} -void test(id x) { +void test(Error *x) { [x method]; } // CHECK: @interface Error // CHECK-NEXT: - (int)method; +// CHECK-NEXT: - (id)method2; // CHECK-NEXT: @end -// CHECK: void test(id x) +// CHECK: void test(Error *x)