reexec_disabled = true;
}
-bool DyldNeedsEnvVariable() {
-// If running on OS X 10.11+ or iOS 9.0+, dyld will interpose even if
-// DYLD_INSERT_LIBRARIES is not set.
-
-#if SANITIZER_IOSSIM
- // GetMacosVersion will not work for the simulator, whose kernel version
- // is tied to the host. Use a weak linking hack for the simulator.
- // This API was introduced in the same version of the OS as the dyld
- // optimization.
+extern "C" double dyldVersionNumber;
+static const double kMinDyldVersionWithAutoInterposition = 360.0;
- // Check for presence of a symbol that is available on OS X 10.11+, iOS 9.0+.
- return (dlsym(RTLD_NEXT, "mach_memory_info") == nullptr);
-#else
- return (GetMacosVersion() <= MACOS_VERSION_YOSEMITE);
-#endif
+bool DyldNeedsEnvVariable() {
+ // 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
+ // `dyldVersionNumber`, which is exported by dyld, against a known version
+ // number from the first OS release where this appeared.
+ return dyldVersionNumber < kMinDyldVersionWithAutoInterposition;
}
void MaybeReexec() {