llvm-project/clang/test/Modules/crash-vfs-relative-overlay.m

57 lines
2.2 KiB
Mathematica
Raw Normal View History

Reapply [2] [VFS] Add 'overlay-relative' field to YAML files This reapplies r261552 and r263748. Fixed testcase to reapply. The VFS overlay mapping between virtual paths and real paths is done through the 'external-contents' entries in YAML files, which contains hardcoded paths to the real files. When a module compilation crashes, headers are dumped into <name>.cache/vfs directory and are mapped via the <name>.cache/vfs/vfs.yaml. The script generated for reproduction uses -ivfsoverlay pointing to file to gather the mapping between virtual paths and files inside <name>.cache/vfs. Currently, we are only capable of reproducing such crashes in the same machine as they happen, because of the hardcoded paths in 'external-contents'. To be able to reproduce a crash in another machine, this patch introduces a new option in the VFS yaml file called 'overlay-relative'. When it's equal to 'true' it means that the provided path to the YAML file through the -ivfsoverlay option should also be used to prefix the final path for every 'external-contents'. Example, given the invocation snippet "... -ivfsoverlay <name>.cache/vfs/vfs.yaml" and the following entry in the yaml file: "overlay-relative": "true", "roots": [ ... "type": "directory", "name": "/usr/include", "contents": [ { "type": "file", "name": "stdio.h", "external-contents": "/usr/include/stdio.h" }, ... Here, a file manager request for virtual "/usr/include/stdio.h", that will map into real path "/<absolute_path_to>/<name>.cache/vfs/usr/include/stdio.h. This is a useful feature for debugging module crashes in machines other than the one where the error happened. Differential Revision: http://reviews.llvm.org/D17457 rdar://problem/24499339 llvm-svn: 263893
2016-03-20 10:08:48 +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: not env FORCE_CLANG_DIAGNOSTICS_CRASH= TMPDIR=%t TEMP=%t TMP=%t \
// RUN: %clang -fsyntax-only %s -I %S/Inputs/System -isysroot %/t/i/ \
// RUN: -fmodules -fmodules-cache-path=%t/m/ 2>&1 | FileCheck %s
// RUN: FileCheck --check-prefix=CHECKSRC %s -input-file %t/crash-vfs-*.m
// RUN: FileCheck --check-prefix=CHECKSH %s -input-file %t/crash-vfs-*.sh
// 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 "Inputs/System/usr/include/stdio.h" | count 1
#include "usr/include/stdio.h"
// CHECK: Preprocessed source(s) and associated run script(s) are located at:
// CHECK-NEXT: note: diagnostic msg: {{.*}}.m
// CHECK-NEXT: note: diagnostic msg: {{.*}}.cache
// CHECKSRC: @import cstd.stdio;
// CHECKSH: # Crash reproducer
// CHECKSH-NEXT: # Driver args: "-fsyntax-only"
// CHECKSH-NEXT: # Original command: {{.*$}}
// CHECKSH-NEXT: "-cc1"
// CHECKSH: "-isysroot" "{{[^"]*}}/i/"
// CHECKSH-NOT: "-fmodules-cache-path="
// CHECKSH: "crash-vfs-{{[^ ]*}}.m"
// CHECKSH: "-ivfsoverlay" "crash-vfs-{{[^ ]*}}.cache/vfs/vfs.yaml"
// CHECKYAML: 'type': 'directory'
// CHECKYAML: 'name': "/[[PATH:.*]]/Inputs/System/usr/include",
// CHECKYAML-NEXT: 'contents': [
// CHECKYAML-NEXT: {
// CHECKYAML-NEXT: 'type': 'file',
// CHECKYAML-NEXT: 'name': "module.map",
// CHECKYAML-NOT: 'external-contents': "{{[^ ]*}}.cache
// CHECKYAML-NEXT: 'external-contents': "/[[PATH]]/Inputs/System/usr/include/module.map"
// CHECKYAML-NEXT: },
// Test that reading the YAML file will yield the correct path after
// the overlay dir is prefixed to access headers in .cache/vfs directory.
// RUN: unset FORCE_CLANG_DIAGNOSTICS_CRASH
// RUN: %clang -E %s -I %S/Inputs/System -isysroot %/t/i/ \
// RUN: -ivfsoverlay %t/crash-vfs-*.cache/vfs/vfs.yaml -fmodules \
// RUN: -fmodules-cache-path=%t/m/ 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECKOVERLAY
// CHECKOVERLAY: @import cstd.stdio; /* clang -E: implicit import for "{{[^ ]*}}.cache/vfs/{{[^ ]*}}/usr/include/stdio.h"