r223753 - [modules] Add experimental -fmodule-map-file-home-is-cwd flag to -cc1.
Duncan P. N. Exon Smith
dexonsmith at apple.com
Mon Dec 8 22:43:07 PST 2014
I reverted this in r223759, since it broke the Green Dragon build for a
few hours:
http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-incremental_build/2259/
http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-incremental_build/2259/consoleFull#43901905849ba4694-19c4-4d7e-bec5-91127
Seems to have broken a few other bots too:
http://lab.llvm.org:8011/console?name=rsmith
> On 2014 Dec 8, at 19:20, Richard Smith <richard-llvm at metafoo.co.uk> wrote:
>
> Author: rsmith
> Date: Mon Dec 8 21:20:04 2014
> New Revision: 223753
>
> URL: http://llvm.org/viewvc/llvm-project?rev=223753&view=rev
> Log:
> [modules] Add experimental -fmodule-map-file-home-is-cwd flag to -cc1.
>
> For files named by -fmodule-map-file=, and files found by 'extern module'
> directives, this flag specifies that we should resolve filenames relative to
> the current working directory rather than relative to the directory in which
> the module map file resides. This is aimed at fixing path handling, in
> particular for relative -I paths, when building modules that represent
> components of the current project (rather than libraries installed on the
> current system, which the current project has as dependencies, where we'd
> typically expect the module map files to be looked up implicitly).
>
> Added:
> cfe/trunk/test/Modules/Inputs/modular_maps-moduleb-cwd.map
> cfe/trunk/test/Modules/Inputs/modular_maps/modulea-cwd.map
> cfe/trunk/test/Modules/Inputs/modular_maps/modulec-cwd.map
> cfe/trunk/test/Modules/Inputs/relative-dep-gen-cwd.modulemap
> Modified:
> cfe/trunk/include/clang/Driver/CC1Options.td
> cfe/trunk/include/clang/Lex/HeaderSearch.h
> cfe/trunk/include/clang/Lex/HeaderSearchOptions.h
> cfe/trunk/include/clang/Lex/ModuleMap.h
> cfe/trunk/lib/Frontend/CompilerInvocation.cpp
> cfe/trunk/lib/Lex/HeaderSearch.cpp
> cfe/trunk/lib/Lex/ModuleMap.cpp
> cfe/trunk/test/Modules/modular_maps.cpp
> cfe/trunk/test/Modules/relative-dep-gen.cpp
>
> Modified: cfe/trunk/include/clang/Driver/CC1Options.td
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/CC1Options.td?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Driver/CC1Options.td (original)
> +++ cfe/trunk/include/clang/Driver/CC1Options.td Mon Dec 8 21:20:04 2014
> @@ -337,6 +337,9 @@ def fno_modules_error_recovery : Flag<["
> def fmodule_implementation_of : Separate<["-"], "fmodule-implementation-of">,
> MetaVarName<"<name>">,
> HelpText<"Specify the name of the module whose implementation file this is">;
> +def fmodule_map_file_home_is_cwd : Flag<["-"], "fmodule-map-file-home-is-cwd">,
> + HelpText<"Use the current working directory as the home directory of "
> + "module maps specified by -fmodule-map-file=<FILE>">;
>
> let Group = Action_Group in {
>
>
> Modified: cfe/trunk/include/clang/Lex/HeaderSearch.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Lex/HeaderSearch.h?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Lex/HeaderSearch.h (original)
> +++ cfe/trunk/include/clang/Lex/HeaderSearch.h Mon Dec 8 21:20:04 2014
> @@ -640,7 +640,8 @@ private:
> };
>
> LoadModuleMapResult loadModuleMapFileImpl(const FileEntry *File,
> - bool IsSystem);
> + bool IsSystem,
> + const DirectoryEntry *Dir);
>
> /// \brief Try to load the module map file in the given directory.
> ///
>
> Modified: cfe/trunk/include/clang/Lex/HeaderSearchOptions.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Lex/HeaderSearchOptions.h?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Lex/HeaderSearchOptions.h (original)
> +++ cfe/trunk/include/clang/Lex/HeaderSearchOptions.h Mon Dec 8 21:20:04 2014
> @@ -101,6 +101,15 @@ public:
> /// \brief Interpret module maps. This option is implied by full modules.
> unsigned ModuleMaps : 1;
>
> + /// \brief Set the 'home directory' of a module map file to the current
> + /// working directory (or the home directory of the module map file that
> + /// contained the 'extern module' directive importing this module map file
> + /// if any) rather than the directory containing the module map file.
> + //
> + /// The home directory is where we look for files named in the module map
> + /// file.
> + unsigned ModuleMapFileHomeIsCwd : 1;
> +
> /// \brief The interval (in seconds) between pruning operations.
> ///
> /// This operation is expensive, because it requires Clang to walk through
> @@ -158,6 +167,7 @@ public:
> public:
> HeaderSearchOptions(StringRef _Sysroot = "/")
> : Sysroot(_Sysroot), DisableModuleHash(0), ModuleMaps(0),
> + ModuleMapFileHomeIsCwd(0),
> ModuleCachePruneInterval(7*24*60*60),
> ModuleCachePruneAfter(31*24*60*60),
> BuildSessionTimestamp(0),
>
> Modified: cfe/trunk/include/clang/Lex/ModuleMap.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Lex/ModuleMap.h?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/Lex/ModuleMap.h (original)
> +++ cfe/trunk/include/clang/Lex/ModuleMap.h Mon Dec 8 21:20:04 2014
> @@ -454,8 +454,12 @@ public:
> /// \param IsSystem Whether this module map file is in a system header
> /// directory, and therefore should be considered a system module.
> ///
> + /// \param HomeDir The directory in which relative paths within this module
> + /// map file will be resolved.
> + ///
> /// \returns true if an error occurred, false otherwise.
> - bool parseModuleMapFile(const FileEntry *File, bool IsSystem);
> + bool parseModuleMapFile(const FileEntry *File, bool IsSystem,
> + const DirectoryEntry *HomeDir);
>
> /// \brief Dump the contents of the module map, for debugging purposes.
> void dump();
>
> Modified: cfe/trunk/lib/Frontend/CompilerInvocation.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Frontend/CompilerInvocation.cpp (original)
> +++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp Mon Dec 8 21:20:04 2014
> @@ -1003,6 +1003,7 @@ static void ParseHeaderSearchArgs(Header
> Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
> // -fmodules implies -fmodule-maps
> Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
> + Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
> Opts.ModuleCachePruneInterval =
> getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
> Opts.ModuleCachePruneAfter =
>
> Modified: cfe/trunk/lib/Lex/HeaderSearch.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/HeaderSearch.cpp?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Lex/HeaderSearch.cpp (original)
> +++ cfe/trunk/lib/Lex/HeaderSearch.cpp Mon Dec 8 21:20:04 2014
> @@ -1113,11 +1113,10 @@ HeaderSearch::findModuleForHeader(const
> return ModMap.findModuleForHeader(File);
> }
>
> -static const FileEntry *getPrivateModuleMap(StringRef ModuleMapPath,
> - const DirectoryEntry *Directory,
> +static const FileEntry *getPrivateModuleMap(const FileEntry *File,
> FileManager &FileMgr) {
> - StringRef Filename = llvm::sys::path::filename(ModuleMapPath);
> - SmallString<128> PrivateFilename(Directory->getName());
> + StringRef Filename = llvm::sys::path::filename(File->getName());
> + SmallString<128> PrivateFilename(File->getDir()->getName());
> if (Filename == "module.map")
> llvm::sys::path::append(PrivateFilename, "module_private.map");
> else if (Filename == "module.modulemap")
> @@ -1128,7 +1127,25 @@ static const FileEntry *getPrivateModule
> }
>
> bool HeaderSearch::loadModuleMapFile(const FileEntry *File, bool IsSystem) {
> - switch (loadModuleMapFileImpl(File, IsSystem)) {
> + // Find the directory for the module. For frameworks, that may require going
> + // up from the 'Modules' directory.
> + const DirectoryEntry *Dir = nullptr;
> + if (getHeaderSearchOpts().ModuleMapFileHomeIsCwd)
> + Dir = FileMgr.getDirectory(".");
> + else {
> + Dir = File->getDir();
> + StringRef DirName(Dir->getName());
> + if (llvm::sys::path::filename(DirName) == "Modules") {
> + DirName = llvm::sys::path::parent_path(DirName);
> + if (DirName.endswith(".framework"))
> + Dir = FileMgr.getDirectory(DirName);
> + // FIXME: This assert can fail if there's a race between the above check
> + // and the removal of the directory.
> + assert(Dir && "parent must exist");
> + }
> + }
> +
> + switch (loadModuleMapFileImpl(File, IsSystem, Dir)) {
> case LMM_AlreadyLoaded:
> case LMM_NewlyLoaded:
> return false;
> @@ -1140,7 +1157,8 @@ bool HeaderSearch::loadModuleMapFile(con
> }
>
> HeaderSearch::LoadModuleMapResult
> -HeaderSearch::loadModuleMapFileImpl(const FileEntry *File, bool IsSystem) {
> +HeaderSearch::loadModuleMapFileImpl(const FileEntry *File, bool IsSystem,
> + const DirectoryEntry *Dir) {
> assert(File && "expected FileEntry");
>
> // Check whether we've already loaded this module map, and mark it as being
> @@ -1149,15 +1167,14 @@ HeaderSearch::loadModuleMapFileImpl(cons
> if (!AddResult.second)
> return AddResult.first->second ? LMM_AlreadyLoaded : LMM_InvalidModuleMap;
>
> - if (ModMap.parseModuleMapFile(File, IsSystem)) {
> + if (ModMap.parseModuleMapFile(File, IsSystem, Dir)) {
> LoadedModuleMaps[File] = false;
> return LMM_InvalidModuleMap;
> }
>
> // Try to load a corresponding private module map.
> - if (const FileEntry *PMMFile =
> - getPrivateModuleMap(File->getName(), File->getDir(), FileMgr)) {
> - if (ModMap.parseModuleMapFile(PMMFile, IsSystem)) {
> + if (const FileEntry *PMMFile = getPrivateModuleMap(File, FileMgr)) {
> + if (ModMap.parseModuleMapFile(PMMFile, IsSystem, Dir)) {
> LoadedModuleMaps[File] = false;
> return LMM_InvalidModuleMap;
> }
> @@ -1231,7 +1248,8 @@ HeaderSearch::loadModuleMapFile(const Di
> return KnownDir->second ? LMM_AlreadyLoaded : LMM_InvalidModuleMap;
>
> if (const FileEntry *ModuleMapFile = lookupModuleMapFile(Dir, IsFramework)) {
> - LoadModuleMapResult Result = loadModuleMapFileImpl(ModuleMapFile, IsSystem);
> + LoadModuleMapResult Result =
> + loadModuleMapFileImpl(ModuleMapFile, IsSystem, Dir);
> // Add Dir explicitly in case ModuleMapFile is in a subdirectory.
> // E.g. Foo.framework/Modules/module.modulemap
> // ^Dir ^ModuleMapFile
>
> Modified: cfe/trunk/lib/Lex/ModuleMap.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/ModuleMap.cpp?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Lex/ModuleMap.cpp (original)
> +++ cfe/trunk/lib/Lex/ModuleMap.cpp Mon Dec 8 21:20:04 2014
> @@ -19,6 +19,7 @@
> #include "clang/Basic/TargetInfo.h"
> #include "clang/Basic/TargetOptions.h"
> #include "clang/Lex/HeaderSearch.h"
> +#include "clang/Lex/HeaderSearchOptions.h"
> #include "clang/Lex/LexDiagnostic.h"
> #include "clang/Lex/Lexer.h"
> #include "clang/Lex/LiteralSupport.h"
> @@ -648,7 +649,7 @@ ModuleMap::inferFrameworkModule(StringRe
> bool IsFrameworkDir = Parent.endswith(".framework");
> if (const FileEntry *ModMapFile =
> HeaderInfo.lookupModuleMapFile(ParentDir, IsFrameworkDir)) {
> - parseModuleMapFile(ModMapFile, IsSystem);
> + parseModuleMapFile(ModMapFile, IsSystem, ParentDir);
> inferred = InferredDirectories.find(ParentDir);
> }
>
> @@ -1024,7 +1025,8 @@ namespace clang {
> /// \brief The current module map file.
> const FileEntry *ModuleMapFile;
>
> - /// \brief The directory that this module map resides in.
> + /// \brief The directory that file names in this module map file should
> + /// be resolved relative to.
> const DirectoryEntry *Directory;
>
> /// \brief The directory containing Clang-supplied headers.
> @@ -1591,7 +1593,11 @@ void ModuleMapParser::parseExternModuleD
> FileNameRef = ModuleMapFileName.str();
> }
> if (const FileEntry *File = SourceMgr.getFileManager().getFile(FileNameRef))
> - Map.parseModuleMapFile(File, /*IsSystem=*/false);
> + Map.parseModuleMapFile(
> + File, /*IsSystem=*/false,
> + Map.HeaderInfo.getHeaderSearchOpts().ModuleMapFileHomeIsCwd
> + ? Directory
> + : File->getDir());
> }
>
> /// \brief Parse a requires declaration.
> @@ -2333,7 +2339,8 @@ bool ModuleMapParser::parseModuleMapFile
> } while (true);
> }
>
> -bool ModuleMap::parseModuleMapFile(const FileEntry *File, bool IsSystem) {
> +bool ModuleMap::parseModuleMapFile(const FileEntry *File, bool IsSystem,
> + const DirectoryEntry *Dir) {
> llvm::DenseMap<const FileEntry *, bool>::iterator Known
> = ParsedModuleMap.find(File);
> if (Known != ParsedModuleMap.end())
> @@ -2346,17 +2353,6 @@ bool ModuleMap::parseModuleMapFile(const
> if (!Buffer)
> return ParsedModuleMap[File] = true;
>
> - // Find the directory for the module. For frameworks, that may require going
> - // up from the 'Modules' directory.
> - const DirectoryEntry *Dir = File->getDir();
> - StringRef DirName(Dir->getName());
> - if (llvm::sys::path::filename(DirName) == "Modules") {
> - DirName = llvm::sys::path::parent_path(DirName);
> - if (DirName.endswith(".framework"))
> - Dir = SourceMgr.getFileManager().getDirectory(DirName);
> - assert(Dir && "parent must exist");
> - }
> -
> // Parse this module map file.
> Lexer L(ID, SourceMgr.getBuffer(ID), SourceMgr, MMapLangOpts);
> ModuleMapParser Parser(L, SourceMgr, Target, Diags, *this, File, Dir,
>
> Added: cfe/trunk/test/Modules/Inputs/modular_maps-moduleb-cwd.map
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/Inputs/modular_maps-moduleb-cwd.map?rev=223753&view=auto
> ==============================================================================
> --- cfe/trunk/test/Modules/Inputs/modular_maps-moduleb-cwd.map (added)
> +++ cfe/trunk/test/Modules/Inputs/modular_maps-moduleb-cwd.map Mon Dec 8 21:20:04 2014
> @@ -0,0 +1,4 @@
> +module B {
> + header "Inputs/modular_maps/common.h"
> + private header "Inputs/modular_maps/b.h"
> +}
>
> Added: cfe/trunk/test/Modules/Inputs/modular_maps/modulea-cwd.map
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/Inputs/modular_maps/modulea-cwd.map?rev=223753&view=auto
> ==============================================================================
> --- cfe/trunk/test/Modules/Inputs/modular_maps/modulea-cwd.map (added)
> +++ cfe/trunk/test/Modules/Inputs/modular_maps/modulea-cwd.map Mon Dec 8 21:20:04 2014
> @@ -0,0 +1,7 @@
> +module A {
> + header "Inputs/modular_maps/common.h"
> + header "Inputs/modular_maps/a.h"
> +}
> +
> +extern module B "Inputs/modular_maps-moduleb-cwd.map"
> +
>
> Added: cfe/trunk/test/Modules/Inputs/modular_maps/modulec-cwd.map
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/Inputs/modular_maps/modulec-cwd.map?rev=223753&view=auto
> ==============================================================================
> --- cfe/trunk/test/Modules/Inputs/modular_maps/modulec-cwd.map (added)
> +++ cfe/trunk/test/Modules/Inputs/modular_maps/modulec-cwd.map Mon Dec 8 21:20:04 2014
> @@ -0,0 +1,3 @@
> +module C {
> + header "Inputs/modular_maps/c.h"
> +}
>
> Added: cfe/trunk/test/Modules/Inputs/relative-dep-gen-cwd.modulemap
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/Inputs/relative-dep-gen-cwd.modulemap?rev=223753&view=auto
> ==============================================================================
> --- cfe/trunk/test/Modules/Inputs/relative-dep-gen-cwd.modulemap (added)
> +++ cfe/trunk/test/Modules/Inputs/relative-dep-gen-cwd.modulemap Mon Dec 8 21:20:04 2014
> @@ -0,0 +1,4 @@
> +module "relative-dep-gen" {
> + header "Inputs/relative-dep-gen-1.h"
> + header "Inputs/relative-dep-gen-2.h"
> +}
>
> Modified: cfe/trunk/test/Modules/modular_maps.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/modular_maps.cpp?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/test/Modules/modular_maps.cpp (original)
> +++ cfe/trunk/test/Modules/modular_maps.cpp Mon Dec 8 21:20:04 2014
> @@ -1,6 +1,15 @@
> // RUN: rm -rf %t
> +//
> // RUN: %clang_cc1 -x objective-c++ -fmodules-cache-path=%t -fmodules -fmodule-map-file=%S/Inputs/modular_maps/modulea.map -fmodule-map-file=%S/Inputs/modular_maps/modulec.map -I %S/Inputs/modular_maps %s -verify
> // RUN: %clang_cc1 -x objective-c++ -fmodules-cache-path=%t -fmodules -fmodule-map-file=%S/Inputs/modular_maps/modulec.map -fmodule-map-file=%S/Inputs/modular_maps/modulea.map -I %S/Inputs/modular_maps %s -verify
> +//
> +// RUN: cd %S
> +// RUN: %clang_cc1 -x objective-c++ -fmodules-cache-path=%t -fmodules -fmodule-map-file=Inputs/modular_maps/modulea.map -fmodule-map-file=Inputs/modular_maps/modulec.map -I Inputs/modular_maps %s -verify
> +// RUN: %clang_cc1 -x objective-c++ -fmodules-cache-path=%t -fmodules -fmodule-map-file=Inputs/modular_maps/modulec.map -fmodule-map-file=Inputs/modular_maps/modulea.map -I Inputs/modular_maps %s -verify
> +//
> +// RUN: cd %S
> +// RUN: %clang_cc1 -x objective-c++ -fmodules-cache-path=%t -fmodules -fmodule-map-file=Inputs/modular_maps/modulea-cwd.map -fmodule-map-file=Inputs/modular_maps/modulec-cwd.map -I Inputs/modular_maps %s -verify -fmodule-map-file-home-is-cwd
> +// RUN: %clang_cc1 -x objective-c++ -fmodules-cache-path=%t -fmodules -fmodule-map-file=Inputs/modular_maps/modulec-cwd.map -fmodule-map-file=Inputs/modular_maps/modulea-cwd.map -I Inputs/modular_maps %s -verify -fmodule-map-file-home-is-cwd
>
> #include "common.h"
> #include "a.h"
>
> Modified: cfe/trunk/test/Modules/relative-dep-gen.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/relative-dep-gen.cpp?rev=223753&r1=223752&r2=223753&view=diff
> ==============================================================================
> --- cfe/trunk/test/Modules/relative-dep-gen.cpp (original)
> +++ cfe/trunk/test/Modules/relative-dep-gen.cpp Mon Dec 8 21:20:04 2014
> @@ -3,6 +3,7 @@
> // RUN: cd %S
> // RUN: rm -rf %t
> // RUN: mkdir %t
> +//
> // RUN: %clang_cc1 -cc1 -fmodule-name=relative-dep-gen -emit-module -x c++ Inputs/relative-dep-gen.modulemap -dependency-file %t/build.d -MT mod.pcm -o %t/mod.pcm
> // RUN: %clang_cc1 -cc1 -fmodule-map-file=Inputs/relative-dep-gen.modulemap -fmodule-file=%t/mod.pcm -dependency-file %t/use-explicit.d -MT use.o relative-dep-gen.cpp -fsyntax-only
> // RUN: %clang_cc1 -cc1 -fmodule-map-file=Inputs/relative-dep-gen.modulemap -dependency-file %t/use-implicit.d relative-dep-gen.cpp -MT use.o -fsyntax-only
> @@ -10,6 +11,14 @@
> // RUN: FileCheck --check-prefix=CHECK-BUILD %s < %t/build.d
> // RUN: FileCheck --check-prefix=CHECK-USE %s < %t/use-explicit.d
> // RUN: FileCheck --check-prefix=CHECK-USE %s < %t/use-implicit.d
> +//
> +// RUN: %clang_cc1 -cc1 -fmodule-name=relative-dep-gen -emit-module -x c++ Inputs/relative-dep-gen-cwd.modulemap -dependency-file %t/build-cwd.d -MT mod.pcm -o %t/mod-cwd.pcm -fmodule-map-file-home-is-cwd
> +// RUN: %clang_cc1 -cc1 -fmodule-map-file=Inputs/relative-dep-gen-cwd.modulemap -fmodule-file=%t/mod-cwd.pcm -dependency-file %t/use-explicit-cwd.d -MT use.o relative-dep-gen.cpp -fsyntax-only -fmodule-map-file-home-is-cwd
> +// RUN: %clang_cc1 -cc1 -fmodule-map-file=Inputs/relative-dep-gen-cwd.modulemap -dependency-file %t/use-implicit-cwd.d relative-dep-gen.cpp -MT use.o -fsyntax-only -fmodule-map-file-home-is-cwd
> +//
> +// RUN: FileCheck --check-prefix=CHECK-BUILD %s < %t/build-cwd.d
> +// RUN: FileCheck --check-prefix=CHECK-USE %s < %t/use-explicit-cwd.d
> +// RUN: FileCheck --check-prefix=CHECK-USE %s < %t/use-implicit-cwd.d
>
> #include "Inputs/relative-dep-gen-1.h"
>
>
>
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