[sanitizer_common] Disable filesystem-related code for Fuchsia

Summary:
Fuchsia doesn't support filesystem access per se at low level.
So it won't use any of the filesystem-oriented code in sanitizer_common.

Submitted on behalf of Roland McGrath.

Reviewers: vitalybuka, alekseyshl, kcc

Reviewed By: vitalybuka

Subscribers: kubamracek, phosek, filcab, llvm-commits

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D36029

llvm-svn: 309749

1 files changed, 14 insertions, 1 deletions

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cc b/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cc
index 82d223a29f3..b54503a6d88 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cc
@@ -26,12 +26,25 @@
 
 namespace __sanitizer {
 
+#if !SANITIZER_FUCHSIA
+
 bool ReportFile::SupportsColors() {
   SpinMutexLock l(mu);
   ReopenIfNecessary();
   return SupportsColoredOutput(fd);
 }
 
+static INLINE bool ReportSupportsColors() {
+  return report_file.SupportsColors();
+}
+
+#else  // SANITIZER_FUCHSIA
+
+// Fuchsia's logs always go through post-processing that handles colorization.
+static INLINE bool ReportSupportsColors() { return true; }
+
+#endif  // !SANITIZER_FUCHSIA
+
 bool ColorizeReports() {
   // FIXME: Add proper Windows support to AnsiColorDecorator and re-enable color
   // printing on Windows.
@@ -40,7 +53,7 @@ bool ColorizeReports() {
 
   const char *flag = common_flags()->color;
   return internal_strcmp(flag, "always") == 0 ||
-         (internal_strcmp(flag, "auto") == 0 && report_file.SupportsColors());
+         (internal_strcmp(flag, "auto") == 0 && ReportSupportsColors());
 }
 
 static void (*sandboxing_callback)();