<rdar://problem/13477190> On Darwin, use DARWIN_USER_TEMP_DIR or DARWIN_USER_CACHE_DIR for the system temporary directory.
The DARWIN_USER_TEMP_DIR and DARWIN_USER_CACHE_DIR configuration
settings are more idiomatic for Darwin than the TMPDIR environment
variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177669 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/PathV2.cpp b/lib/Support/PathV2.cpp
index 41add96..58a6ea7 100644
--- a/lib/Support/PathV2.cpp
+++ b/lib/Support/PathV2.cpp
@@ -18,6 +18,9 @@
#include <cctype>
#include <cstdio>
#include <cstring>
+#ifdef __APPLE__
+#include <unistd.h>
+#endif
namespace {
using llvm::StringRef;
@@ -493,6 +496,27 @@
void system_temp_directory(bool erasedOnReboot, SmallVectorImpl<char> &result) {
result.clear();
+#ifdef __APPLE__
+ // On Darwin, use DARWIN_USER_TEMP_DIR or DARWIN_USER_CACHE_DIR.
+ int ConfName = erasedOnReboot? _CS_DARWIN_USER_TEMP_DIR
+ : _CS_DARWIN_USER_CACHE_DIR;
+ size_t ConfLen = confstr(ConfName, 0, 0);
+ if (ConfLen > 0) {
+ do {
+ result.resize(ConfLen);
+ ConfLen = confstr(ConfName, result.data(), result.size());
+ } while (ConfLen > 0 && ConfLen != result.size());
+
+ if (ConfLen > 0) {
+ assert(result.back() == 0);
+ result.pop_back();
+ return;
+ }
+
+ result.clear();
+ }
+#endif
+
// Check whether the temporary directory is specified by an environment
// variable.
const char *EnvironmentVariable;