Fix issue 553: function frame is skipped in profile when compare stub is called.

src/platform-linux.cc

Index: src/platform-linux.cc
diff --git a/src/platform-linux.cc b/src/platform-linux.cc
index bfcd8fba7237e1c28306e59664ce0c4d433932c4..93f23f33cc7d47d6e9b50bf6ae4ea9f45624c9c6 100644
--- a/src/platform-linux.cc
+++ b/src/platform-linux.cc
@@ -707,23 +707,23 @@ static void ProfilerSignalHandler(int signal, siginfo_t* info, void* context) {
     ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(context);
     mcontext_t& mcontext = ucontext->uc_mcontext;
 #if V8_HOST_ARCH_IA32
-    sample.pc = mcontext.gregs[REG_EIP];
-    sample.sp = mcontext.gregs[REG_ESP];
-    sample.fp = mcontext.gregs[REG_EBP];
+    sample.pc = reinterpret_cast<Address>(mcontext.gregs[REG_EIP]);
+    sample.sp = reinterpret_cast<Address>(mcontext.gregs[REG_ESP]);
+    sample.fp = reinterpret_cast<Address>(mcontext.gregs[REG_EBP]);
 #elif V8_HOST_ARCH_X64
-    sample.pc = mcontext.gregs[REG_RIP];
-    sample.sp = mcontext.gregs[REG_RSP];
-    sample.fp = mcontext.gregs[REG_RBP];
+    sample.pc = reinterpret_cast<Address>(mcontext.gregs[REG_RIP]);
+    sample.sp = reinterpret_cast<Address>(mcontext.gregs[REG_RSP]);
+    sample.fp = reinterpret_cast<Address>(mcontext.gregs[REG_RBP]);
 #elif V8_HOST_ARCH_ARM
 // An undefined macro evaluates to 0, so this applies to Android's Bionic also.
 #if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
-    sample.pc = mcontext.gregs[R15];
-    sample.sp = mcontext.gregs[R13];
-    sample.fp = mcontext.gregs[R11];
+    sample.pc = reinterpret_cast<Address>(mcontext.gregs[R15]);
+    sample.sp = reinterpret_cast<Address>(mcontext.gregs[R13]);
+    sample.fp = reinterpret_cast<Address>(mcontext.gregs[R11]);
 #else
-    sample.pc = mcontext.arm_pc;
-    sample.sp = mcontext.arm_sp;
-    sample.fp = mcontext.arm_fp;
+    sample.pc = reinterpret_cast<Address>(mcontext.arm_pc);
+    sample.sp = reinterpret_cast<Address>(mcontext.arm_sp);
+    sample.fp = reinterpret_cast<Address>(mcontext.arm_fp);
 #endif
 #endif
     if (IsVmThread())