diff options
| -rw-r--r-- | compiler-rt/lib/sanitizer_common/sanitizer_mac.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cc b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cc index 35cd3c59610..c2e8b1ec38f 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cc +++ b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cc @@ -564,10 +564,14 @@ bool ReexecDisabled() { return false; } -extern "C" double dyldVersionNumber; +extern "C" SANITIZER_WEAK_ATTRIBUTE double dyldVersionNumber; static const double kMinDyldVersionWithAutoInterposition = 360.0; bool DyldNeedsEnvVariable() { + // Although sanitizer support was added to LLVM on OS X 10.7+, GCC users + // still may want use them on older systems. On older Darwin platforms, dyld + // doesn't export dyldVersionNumber symbol and we simply return true. + if (!&dyldVersionNumber) return true; // If running on OS X 10.11+ or iOS 9.0+, dyld will interpose even if // DYLD_INSERT_LIBRARIES is not set. However, checking OS version via // GetMacosVersion() doesn't work for the simulator. Let's instead check |
