[AArch64] Use "x" predication for SVE integer arithmetic patterns

[thirdparty/gcc.git] / libsanitizer / interception / interception_linux.cc

diff --git a/libsanitizer/interception/interception_linux.cc b/libsanitizer/interception/interception_linux.cc
index 888b2ceac13eb3584786c844cc25a181b8912ec1..781b77e46fd1a751928cd7cc9dbeec7d76a29008 100644 (file)
--- a/libsanitizer/interception/interception_linux.cc
+++ b/libsanitizer/interception/interception_linux.cc
@@ -10,32 +10,44 @@
 // Linux-specific interception methods.
 //===----------------------------------------------------------------------===//
 
-#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__)
 #include "interception.h"
 
+#if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
+    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+
 #include <dlfcn.h>   // for dlsym() and dlvsym()
 
-#ifdef __NetBSD__
+#if SANITIZER_NETBSD
 #include "sanitizer_common/sanitizer_libc.h"
 #endif
 
 namespace __interception {
 bool GetRealFunctionAddress(const char *func_name, uptr *func_addr,
     uptr real, uptr wrapper) {
-#ifdef __NetBSD__
+#if SANITIZER_NETBSD
   // XXX: Find a better way to handle renames
   if (internal_strcmp(func_name, "sigaction") == 0) func_name = "__sigaction14";
 #endif
   *func_addr = (uptr)dlsym(RTLD_NEXT, func_name);
+  if (!*func_addr) {
+    // If the lookup using RTLD_NEXT failed, the sanitizer runtime library is
+    // later in the library search order than the DSO that we are trying to
+    // intercept, which means that we cannot intercept this function. We still
+    // want the address of the real definition, though, so look it up using
+    // RTLD_DEFAULT.
+    *func_addr = (uptr)dlsym(RTLD_DEFAULT, func_name);
+  }
   return real == wrapper;
 }
 
-#if !defined(__ANDROID__)  // android does not have dlvsym
+// Android and Solaris do not have dlvsym
+#if !SANITIZER_ANDROID && !SANITIZER_SOLARIS && !SANITIZER_OPENBSD
 void *GetFuncAddrVer(const char *func_name, const char *ver) {
   return dlvsym(RTLD_NEXT, func_name, ver);
 }
-#endif  // !defined(__ANDROID__)
+#endif  // !SANITIZER_ANDROID
 
 }  // namespace __interception
 
-#endif  // __linux__ || __FreeBSD__ || __NetBSD__
+#endif  // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD ||
+        // SANITIZER_OPENBSD || SANITIZER_SOLARIS