diff --git a/src/emu/cpu/m6800/6800ops.c b/src/emu/cpu/m6800/6800ops.c
index abdcfcd74f8..1948e325888 100644
--- a/src/emu/cpu/m6800/6800ops.c
+++ b/src/emu/cpu/m6800/6800ops.c
@@ -233,10 +233,10 @@ OP_HANDLER( bra )
 }
 
 /* $21 BRN relative ----- */
+static UINT8 m6800_brn_t; // hack around GCC 4.6 error because we need the side effects of IMMBYTE  
 OP_HANDLER( brn )
 {
-	UINT8 t;
-	IMMBYTE(t);
+	IMMBYTE(m6800_brn_t);
 }
 
 /* $22 BHI relative ----- */
diff --git a/src/emu/cpu/m68000/m68kfpu.c b/src/emu/cpu/m68000/m68kfpu.c
index e3b49ccb044..27bf7c73a3e 100644
--- a/src/emu/cpu/m68000/m68kfpu.c
+++ b/src/emu/cpu/m68000/m68kfpu.c
@@ -257,9 +257,9 @@ INLINE void store_pack_float80(m68ki_cpu_core *m68k, UINT32 ea, int k, floatx80
 
 INLINE void SET_CONDITION_CODES(m68ki_cpu_core *m68k, floatx80 reg)
 {
-	UINT64 *regi;
+//	UINT64 *regi;
 
-	regi = (UINT64 *)®
+//	regi = (UINT64 *)®
 
 	REG_FPSR &= ~(FPCC_N|FPCC_Z|FPCC_I|FPCC_NAN);
 
@@ -1341,7 +1341,7 @@ static void fpgen_rm_reg(m68ki_cpu_core *m68k, UINT16 w2)
 		}
 		case 0x1e:		// FGETEXP
 		{
-			floatx80 temp = source;
+//			floatx80 temp = source;
 			INT16 temp2;
 
 			temp2 = source.high;	// get the exponent
diff --git a/src/emu/cpu/m6805/6805ops.c b/src/emu/cpu/m6805/6805ops.c
index 50c65abf4fc..0cb9f6e3baf 100644
--- a/src/emu/cpu/m6805/6805ops.c
+++ b/src/emu/cpu/m6805/6805ops.c
@@ -77,10 +77,10 @@ OP_HANDLER( bra )
 }
 
 /* $21 BRN relative ---- */
+static UINT8 m6805_brn_t; // hack around GCC 4.6 error because we need the side effects of IMMBYTE  
 OP_HANDLER( brn )
 {
-	UINT8 t;
-	IMMBYTE(t);
+	IMMBYTE(m6805_brn_t);
 }
 
 /* $22 BHI relative ---- */
diff --git a/src/emu/cpu/m6809/6809ops.c b/src/emu/cpu/m6809/6809ops.c
index a691ccf2812..924ea78795d 100644
--- a/src/emu/cpu/m6809/6809ops.c
+++ b/src/emu/cpu/m6809/6809ops.c
@@ -371,10 +371,10 @@ OP_HANDLER( bra )
 }
 
 /* $21 BRN relative ----- */
+static UINT8 m6809_brn_t; // hack around GCC 4.6 error because we need the side effects of IMMBYTE  
 OP_HANDLER( brn )
 {
-	UINT8 t;
-	IMMBYTE(t);
+	IMMBYTE(m6809_brn_t);
 }
 
 /* $1021 LBRN relative ----- */
diff --git a/src/emu/cpu/minx/minx.c b/src/emu/cpu/minx/minx.c
index fc4597957ef..d0bc3321b2b 100644
--- a/src/emu/cpu/minx/minx.c
+++ b/src/emu/cpu/minx/minx.c
@@ -169,14 +169,14 @@ INLINE UINT16 rdop16( minx_state *minx )
 
 static CPU_EXECUTE( minx )
 {
-	UINT32	oldpc;
+//	UINT32	oldpc;
 	UINT8	op;
 	minx_state *minx = get_safe_token(device);
 
 	do
 	{
 		debugger_instruction_hook(device, GET_MINX_PC);
-		oldpc = GET_MINX_PC;
+//		oldpc = GET_MINX_PC;
 
 		if ( minx->interrupt_pending )
 		{
diff --git a/src/emu/cpu/nec/necinstr.c b/src/emu/cpu/nec/necinstr.c
index 47ea0432e14..1fb8ee1d195 100644
--- a/src/emu/cpu/nec/necinstr.c
+++ b/src/emu/cpu/nec/necinstr.c
@@ -152,12 +152,12 @@ OP( 0x60, i_pusha  ) {
 	PUSH(Wreg(IY));
 	CLKS(67,35,20);
 }
+static unsigned nec_popa_tmp;
 OP( 0x61, i_popa  ) {
-	unsigned tmp;
 	POP(Wreg(IY));
 	POP(Wreg(IX));
 	POP(Wreg(BP));
-	POP(tmp);
+	POP(nec_popa_tmp);
 	POP(Wreg(BW));
 	POP(Wreg(DW));
 	POP(Wreg(CW));
@@ -529,8 +529,8 @@ OP( 0xd3, i_rotshft_wcl ) {
 	}
 }
 
-OP( 0xd4, i_aam    ) { UINT32 mult=FETCH(); mult=0; Breg(AH) = Breg(AL) / 10; Breg(AL) %= 10; SetSZPF_Word(Wreg(AW)); CLKS(15,15,12); }
-OP( 0xd5, i_aad    ) { UINT32 mult=FETCH(); mult=0; Breg(AL) = Breg(AH) * 10 + Breg(AL); Breg(AH) = 0; SetSZPF_Byte(Breg(AL)); CLKS(7,7,8); }
+OP( 0xd4, i_aam    ) { FETCH(); Breg(AH) = Breg(AL) / 10; Breg(AL) %= 10; SetSZPF_Word(Wreg(AW)); CLKS(15,15,12); }
+OP( 0xd5, i_aad    ) { FETCH(); Breg(AL) = Breg(AH) * 10 + Breg(AL); Breg(AH) = 0; SetSZPF_Byte(Breg(AL)); CLKS(7,7,8); }
 OP( 0xd6, i_setalc ) { Breg(AL) = (CF)?0xff:0x00; nec_state->icount-=3; logerror("%06x: Undefined opcode (SETALC)\n",PC(nec_state)); }
 OP( 0xd7, i_trans  ) { UINT32 dest = (Wreg(BW)+Breg(AL))&0xffff; Breg(AL) = GetMemB(DS0, dest); CLKS(9,9,5); }
 OP( 0xd8, i_fpo    ) { GetModRM; nec_state->icount-=2;	logerror("%06x: Unimplemented floating point control %04x\n",PC(nec_state),ModRM); }
diff --git a/src/emu/cpu/v30mz/v30mz.c b/src/emu/cpu/v30mz/v30mz.c
index d56785e22ad..900a5616376 100644
--- a/src/emu/cpu/v30mz/v30mz.c
+++ b/src/emu/cpu/v30mz/v30mz.c
@@ -378,12 +378,12 @@ OP( 0x60, i_pusha  ) {
 	PUSH(cpustate->regs.w[IY]);
 	CLK(9);
 }
+static unsigned nec_v30mz_popa_tmp;
 OP( 0x61, i_popa  ) {
-    unsigned tmp;
 	POP(cpustate->regs.w[IY]);
 	POP(cpustate->regs.w[IX]);
 	POP(cpustate->regs.w[BP]);
-    POP(tmp);
+    POP(nec_v30mz_popa_tmp);
 	POP(cpustate->regs.w[BW]);
 	POP(cpustate->regs.w[DW]);
 	POP(cpustate->regs.w[CW]);
@@ -753,8 +753,8 @@ OP( 0xd3, i_rotshft_wcl ) {
 	}
 }
 
-OP( 0xd4, i_aam    ) { UINT32 mult=FETCH; mult=0; cpustate->regs.b[AH] = cpustate->regs.b[AL] / 10; cpustate->regs.b[AL] %= 10; SetSZPF_Word(cpustate->regs.w[AW]); CLK(17); }
-OP( 0xd5, i_aad    ) { UINT32 mult=FETCH; mult=0; cpustate->regs.b[AL] = cpustate->regs.b[AH] * 10 + cpustate->regs.b[AL]; cpustate->regs.b[AH] = 0; SetSZPF_Byte(cpustate->regs.b[AL]); CLK(5); }
+OP( 0xd4, i_aam    ) { FETCH; cpustate->regs.b[AH] = cpustate->regs.b[AL] / 10; cpustate->regs.b[AL] %= 10; SetSZPF_Word(cpustate->regs.w[AW]); CLK(17); }
+OP( 0xd5, i_aad    ) { FETCH; cpustate->regs.b[AL] = cpustate->regs.b[AH] * 10 + cpustate->regs.b[AL]; cpustate->regs.b[AH] = 0; SetSZPF_Byte(cpustate->regs.b[AL]); CLK(5); }
 OP( 0xd6, i_setalc ) { cpustate->regs.b[AL] = (CF)?0xff:0x00; CLK(3); logerror("%06x: Undefined opcode (SETALC)\n",PC(cpustate)); }
 OP( 0xd7, i_trans  ) { UINT32 dest = (cpustate->regs.w[BW]+cpustate->regs.b[AL])&0xffff; cpustate->regs.b[AL] = GetMemB(DS, dest); CLK(5); }
 OP( 0xd8, i_fpo    ) { GetModRM; CLK(1);	logerror("%06x: Unimplemented floating point control %04x\n",PC(cpustate),ModRM); }
diff --git a/src/emu/hashfile.c b/src/emu/hashfile.c
index 53c185d4bdf..ed392b6e90b 100644
--- a/src/emu/hashfile.c
+++ b/src/emu/hashfile.c
@@ -178,7 +178,7 @@ static void start_handler(void *data, const char *tagname, const char **attribut
 	hash_collection hashes;
 	astring all_functions;
 	char functions;
-	iodevice_t device;
+//	iodevice_t device;
 	int i;
 
 	switch(state->pos)
@@ -198,7 +198,7 @@ static void start_handler(void *data, const char *tagname, const char **attribut
 			{
 				// we are now examining a hash tag
 				name = NULL;
-				device = IO_COUNT;
+//				device = IO_COUNT;
 
 				while(attributes[0])
 				{
@@ -230,7 +230,9 @@ static void start_handler(void *data, const char *tagname, const char **attribut
 						if (i < 0)
 							unknown_attribute_value(state, attributes[0], attributes[1]);
 						else
-							device = (iodevice_t) i;
+						{
+	 //   						device = (iodevice_t) i;
+						}
 					}
 					else
 					{