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Check for $PWD in llvm::sys::current_path.

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Some users (clang, libTooling) require this. After this patch we can remove
the calls to getenv("PWD") from clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188125 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-08-10 00:50:57 +00:00
parent 3ed7576a3b
commit 0a69bac396
2 changed files with 22 additions and 0 deletions
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12
lib/Support/Unix/Path.inc
View File

@ -298,6 +298,18 @@ UniqueID file_status::getUniqueID() const {
}
error_code current_path(SmallVectorImpl<char> &result) {
result.clear();
const char *pwd = ::getenv("PWD");
llvm::sys::fs::file_status PWDStatus, DotStatus;
if (pwd && llvm::sys::path::is_absolute(pwd) &&
!llvm::sys::fs::status(pwd, PWDStatus) &&
!llvm::sys::fs::status(".", DotStatus) &&
PWDStatus.getUniqueID() == DotStatus.getUniqueID()) {
result.append(pwd, pwd + strlen(pwd));
return error_code::success();
}
#ifdef MAXPATHLEN
result.reserve(MAXPATHLEN);
#else

10
test/MC/ELF/comp-dir.s
View File

@ -1,7 +1,17 @@
// REQUIRES: shell
// XFAIL: mingw
// RUN: llvm-mc -triple=x86_64-linux-unknown -g -fdebug-compilation-dir=/test/comp/dir %s -filetype=obj -o %t.o
// RUN: llvm-dwarfdump -debug-dump=info %t.o | FileCheck %s
// CHECK: DW_AT_comp_dir [DW_FORM_string] ("{{([A-Za-z]:.*)?}}/test/comp/dir")
// RUN: mkdir -p %t.foo
// RUN: ln -sf %t.foo %t.bar
// RUN: cd %t.foo
// RUN: env PWD=%t.bar llvm-mc -triple=x86_64-linux-unknown -g %s -filetype=obj -o %t.o
// RUN: llvm-dwarfdump -debug-dump=info %t.o | FileCheck --check-prefix=PWD %s
// PWD: DW_AT_comp_dir [DW_FORM_string] ("{{.*}}.bar")
f:
nop