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[ModuleMap][CrashReproducer] Collect headers from inner frameworks (1) Collect headers under inner frameworks (frameworks inside other other frameworks). (2) Make sure we also collect the right header files inside them. More info on (2): Consider a dummy framework module B, with header Frameworks/B/B.h. Now consider that another framework A, with header Frameworks/A/A.h, has a layout with a inner framework Frameworks/A/Frameworks/B/B.h, where the "B/B.h" part is a symlink for Frameworks/B/B.h. Also assume that Frameworks/A/A.h includes <B/B.h>. When parsing header Frameworks/A/A.h, framework module lookup is performed in search for B, and it happens that "Frameworks/A/Frameworks/B/B.h" path is registered in the module instead of real "Frameworks/B/B.h". This occurs because "Frameworks/A/Frameworks/B/B.h" is scanned first by the FileManager, when looking for inner framework modules under Frameworks/A/Frameworks. This makes Frameworks/A/Frameworks/B/B.h the default cached named inside the FileManager for the B.h file UID. This leads to modules being built without consistent paths to underlying header files. This is usually not a problem in regular compilation flow, but it's an issue when running the crash reproducer. The issue is that clangs collect "Frameworks/A/Frameworks/B/B.h" but not "Frameworks/B/B.h" into the VFS, leading to err_mmap_umbrella_clash. So make sure we also collect the original header. Differential Revision: http://reviews.llvm.org/D20194 rdar://problem/25880368 llvm-svn: 269502
2016-05-14 06:21:51 +08:00
// REQUIRES: crash-recovery, shell
// FIXME: This XFAIL is cargo-culted from crash-report.c. Do we need it?
// XFAIL: mingw32
// RUN: rm -rf %t
// RUN: mkdir -p %t/i %t/m %t
// RUN: cp -a %S/Inputs/crash-recovery/Frameworks %t/i/
// RUN: mkdir -p %t/i/Frameworks/A.framework/Frameworks
// RUN: ln -s ../../B.framework %t/i/Frameworks/A.framework/Frameworks/B.framework
// RUN: not env FORCE_CLANG_DIAGNOSTICS_CRASH= TMPDIR=%t TEMP=%t TMP=%t \
// RUN: %clang -nostdinc -fsyntax-only %s \
// RUN: -F %/t/i/Frameworks -fmodules \
// RUN: -fmodules-cache-path=%t/m/ 2>&1 | FileCheck %s
// RUN: FileCheck --check-prefix=CHECKYAML %s -input-file \
// RUN: %t/crash-vfs-*.cache/vfs/vfs.yaml
// RUN: find %t/crash-vfs-*.cache/vfs | \
// RUN: grep "B.framework/Headers/B.h" | count 1
// CHECK: Preprocessed source(s) and associated run script(s) are located at:
// CHECK-NEXT: note: diagnostic msg: {{.*}}.m
// CHECK-NEXT: note: diagnostic msg: {{.*}}.cache
// CHECKYAML: 'type': 'directory',
// CHECKYAML: 'name': "/[[PATH:.*]]/i/Frameworks/A.framework/Frameworks/B.framework/Headers",
// CHECKYAML-NEXT: 'contents': [
// CHECKYAML-NEXT: {
// CHECKYAML-NEXT: 'type': 'file',
// CHECKYAML-NEXT: 'name': "B.h",
// CHECKYAML-NEXT: 'external-contents': "/[[PATH]]/i/Frameworks/B.framework/Headers/B.h"
// CHECKYAML: 'type': 'directory',
// CHECKYAML: 'name': "/[[PATH]]/i/Frameworks/B.framework/Headers",
// CHECKYAML-NEXT: 'contents': [
// CHECKYAML-NEXT: {
// CHECKYAML-NEXT: 'type': 'file',
// CHECKYAML-NEXT: 'name': "B.h",
// CHECKYAML-NEXT: 'external-contents': "/[[PATH]]/i/Frameworks/B.framework/Headers/B.h"
@import I;
[Modules] Use vfs for (recursive) directory iteration Clang performs directory walk while searching headers inside modules by using the ::sys::fs instead of ::vfs. This prevents any code that uses the VFS (e.g, reproducer scripts) to actually find such headers, since the VFS will never be searched for those. Change these places to use vfs::recursive_directory_iterator and vfs::directory_iterator instead. Differential Revision: http://reviews.llvm.org/D20266 rdar://problem/25880368 llvm-svn: 269661
2016-05-17 00:46:01 +08:00
// Run the reproducer script - regular exit code is enough to test it works. The
// intent here is to guarantee that the collect umbrella headers into the VFS
// can be used, testing that vfs::recursive_directory_iterator is used correctly
// Make sure to erase the include paths used to build the modules to guarantee
// that the VFS overlay won't fallback to use it. Also wipe out the module cache
// to force header search.
//
// RUN: cd %t
// RUN: rm -rf i
// RUN: rm -rf crash-vfs-umbrella-*.cache/modules/*
// RUN: chmod 755 crash-vfs-*.sh
// RUN: ./crash-vfs-*.sh