unwind-dw2-fde-darwin.c (examine_objects): Fix aliasing in read_encoded_value_with_base call.

	* unwind-dw2-fde-darwin.c (examine_objects): Fix aliasing in
	read_encoded_value_with_base call.
	* unwind-dw2-fde-glibc.c (_Unwind_IteratePhdrCallback): Likewise.
	* unwind-dw2-fde.c (_Unwind_Find_FDE): Likewise.
	* unwind-dw2.c (extract_cie_info): Fix aliasing in
	read_encoded_value call.
	(execute_cfa_program, uw_frame_state_for): Likewise.

From-SVN: r100927

gcc/ChangeLog

+2005-06-14  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* unwind-dw2-fde-darwin.c (examine_objects): Fix aliasing in
+	read_encoded_value_with_base call.
+	* unwind-dw2-fde-glibc.c (_Unwind_IteratePhdrCallback): Likewise.
+	* unwind-dw2-fde.c (_Unwind_Find_FDE): Likewise.
+	* unwind-dw2.c (extract_cie_info): Fix aliasing in
+	read_encoded_value call.
+	(execute_cfa_program, uw_frame_state_for): Likewise.
+
 2005-06-13  Roger Sayle  <roger@eyesopen.com>
 
 	PR rtl-optimization/22053

gcc/unwind-dw2-fde-darwin.c

@@ -220,6 +220,7 @@ examine_objects (void *pc, struct dwarf_eh_bases *bases, int dont_alloc)
 	    if (result)
 	      {
 		int encoding;
+		_Unwind_Ptr func;
 
 		bases->tbase = ob->tbase;
 		bases->dbase = ob->dbase;
@@ -229,8 +230,8 @@ examine_objects (void *pc, struct dwarf_eh_bases *bases, int dont_alloc)
 		  encoding = get_fde_encoding (result);
 		read_encoded_value_with_base (encoding,
 					      base_from_object (encoding, ob),
-					      result->pc_begin,
-					      (_Unwind_Ptr *)&bases->func);
+					      result->pc_begin, &func);
+		bases->func = (void *) func;
 		break;
 	      }
 	  }

gcc/unwind-dw2-fde-glibc.c

@@ -386,11 +386,13 @@ _Unwind_IteratePhdrCallback (struct dl_phdr_info *info, size_t size, void *ptr)
   data->ret = linear_search_fdes (&ob, (fde *) eh_frame, (void *) data->pc);
   if (data->ret != NULL)
     {
+      _Unwind_Ptr func;
       unsigned int encoding = get_fde_encoding (data->ret);
+      
       read_encoded_value_with_base (encoding,
 				    base_from_cb_data (encoding, data),
-				    data->ret->pc_begin,
-				    (_Unwind_Ptr *)&data->func);
+				    data->ret->pc_begin, &func);
+      data->func = (void *) func;
     }
   return 1;
 }

gcc/unwind-dw2-fde.c

@@ -1013,6 +1013,7 @@ _Unwind_Find_FDE (void *pc, struct dwarf_eh_bases *bases)
   if (f)
     {
       int encoding;
+      _Unwind_Ptr func;
 
       bases->tbase = ob->tbase;
       bases->dbase = ob->dbase;
@@ -1021,7 +1022,8 @@ _Unwind_Find_FDE (void *pc, struct dwarf_eh_bases *bases)
       if (ob->s.b.mixed_encoding)
 	encoding = get_fde_encoding (f);
       read_encoded_value_with_base (encoding, base_from_object (encoding, ob),
-				    f->pc_begin, (_Unwind_Ptr *)&bases->func);
+				    f->pc_begin, &func);
+      bases->func = (void *) func;
     }
 
   return f;

gcc/unwind-dw2.c

@@ -320,8 +320,10 @@ extract_cie_info (const struct dwarf_cie *cie, struct _Unwind_Context *context,
       /* "P" indicates a personality routine in the CIE augmentation.  */
       else if (aug[0] == 'P')
 	{
-	  p = read_encoded_value (context, *p, p + 1,
-				  (_Unwind_Ptr *) &fs->personality);
+	  _Unwind_Ptr personality;
+	  
+	  p = read_encoded_value (context, *p, p + 1, &personality);
+	  fs->personality = (_Unwind_Personality_Fn) personality;
 	  aug += 1;
 	}
 
@@ -785,8 +787,13 @@ execute_cfa_program (const unsigned char *insn_ptr,
       else switch (insn)
 	{
 	case DW_CFA_set_loc:
-	  insn_ptr = read_encoded_value (context, fs->fde_encoding,
-					 insn_ptr, (_Unwind_Ptr *) &fs->pc);
+	  {
+	    _Unwind_Ptr pc;
+	    
+	    insn_ptr = read_encoded_value (context, fs->fde_encoding,
+					   insn_ptr, &pc);
+	    fs->pc = (void *) pc;
+	  }
 	  break;
 
 	case DW_CFA_advance_loc1:
@@ -1001,8 +1008,12 @@ uw_frame_state_for (struct _Unwind_Context *context, _Unwind_FrameState *fs)
       insn = aug + i;
     }
   if (fs->lsda_encoding != DW_EH_PE_omit)
-    aug = read_encoded_value (context, fs->lsda_encoding, aug,
-			      (_Unwind_Ptr *) &context->lsda);
+    {
+      _Unwind_Ptr lsda;
+      
+      aug = read_encoded_value (context, fs->lsda_encoding, aug, &lsda);
+      context->lsda = (void *) lsda;
+    }
 
   /* Then the insns in the FDE up to our target PC.  */
   if (insn == NULL)