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Re: two patches for bugs in BFD/peXXigen.c


On Mon, Sep 06, 2010 at 10:55:08AM +0200, Kai Tietz wrote:
> Would it be possible to get it without whitespace changes? 80% of it

Index: bfd/peXXigen.c
===================================================================
RCS file: /cvs/src/src/bfd/peXXigen.c,v
retrieving revision 1.64
diff -u -p -w -r1.64 peXXigen.c
--- bfd/peXXigen.c	27 Jun 2010 04:07:53 -0000	1.64
+++ bfd/peXXigen.c	6 Sep 2010 10:15:02 -0000
@@ -1223,7 +1223,7 @@ pe_print_idata (bfd * abfd, void * vfile
 	  bfd_byte *ft_data;
 	  asection *ft_section;
 	  bfd_vma ft_addr;
-	  bfd_size_type ft_datasize;
+	  bfd_size_type ft_datasize = 0;
 	  int ft_idx;
 	  int ft_allocated = 0;
 
@@ -1234,6 +1234,7 @@ pe_print_idata (bfd * abfd, void * vfile
 	  ft_addr = first_thunk + extra->ImageBase;
 	  ft_data = data;
 	  ft_idx = first_thunk - adj;
+	  ft_datasize = section->size - ft_idx;
 	  ft_allocated = 0; 
 
 	  if (first_thunk != hint_addr)
@@ -1242,12 +1243,9 @@ pe_print_idata (bfd * abfd, void * vfile
 	      for (ft_section = abfd->sections;
 		   ft_section != NULL;
 		   ft_section = ft_section->next)
-		{
-		  ft_datasize = ft_section->size;
 		  if (ft_addr >= ft_section->vma
-		      && ft_addr < ft_section->vma + ft_datasize)
+		    && ft_addr < ft_section->vma + ft_section->size)
 		    break;
-		}
 
 	      if (ft_section == NULL)
 		{
@@ -1258,21 +1256,17 @@ pe_print_idata (bfd * abfd, void * vfile
 
 	      /* Now check to see if this section is the same as our current
 		 section.  If it is not then we will have to load its data in.  */
-	      if (ft_section == section)
-		{
-		  ft_data = data;
-		  ft_idx = first_thunk - adj;
-		}
-	      else
+	      if (ft_section != section)
 		{
 		  ft_idx = first_thunk - (ft_section->vma - extra->ImageBase);
-		  ft_data = (bfd_byte *) bfd_malloc (datasize);
+		  ft_datasize = ft_section->size - ft_idx;
+		  ft_data = (bfd_byte *) bfd_malloc (ft_datasize);
 		  if (ft_data == NULL)
 		    continue;
 
-		  /* Read datasize bfd_bytes starting at offset ft_idx.  */
-		  if (! bfd_get_section_contents
-		      (abfd, ft_section, ft_data, (bfd_vma) ft_idx, datasize))
+		  /* Read ft_datasize bytes starting at offset ft_idx.  */
+		  if (!bfd_get_section_contents (abfd, ft_section, ft_data,
+						 (bfd_vma) ft_idx, ft_datasize))
 		    {
 		      free (ft_data);
 		      continue;
@@ -1310,7 +1304,8 @@ pe_print_idata (bfd * abfd, void * vfile
 		 table holds actual addresses.  */
 	      if (time_stamp != 0
 		  && first_thunk != 0
-		  && first_thunk != hint_addr)
+		  && first_thunk != hint_addr
+		  && j + 4 <= ft_datasize)
 		fprintf (file, "\t%04lx",
 			 (unsigned long) bfd_get_32 (abfd, ft_data + ft_idx + j));
 	      fprintf (file, "\n");
@@ -1342,7 +1337,8 @@ pe_print_idata (bfd * abfd, void * vfile
 		 table holds actual addresses.  */
 	      if (time_stamp != 0
 		  && first_thunk != 0
-		  && first_thunk != hint_addr)
+		  && first_thunk != hint_addr
+		  && j + 4 <= ft_datasize)
 		fprintf (file, "\t%04lx",
 			 (unsigned long) bfd_get_32 (abfd, ft_data + ft_idx + j));
 
@@ -1828,7 +1824,6 @@ _bfd_XX_print_ce_compressed_pdata (bfd *
       bfd_vma other_data;
       bfd_vma prolog_length, function_length;
       int flag32bit, exception_flag;
-      bfd_byte *tdata = 0;
       asection *tsection;
 
       if (i + PDATA_ROW_SIZE > stop)
@@ -1860,12 +1855,14 @@ _bfd_XX_print_ce_compressed_pdata (bfd *
       if (tsection && coff_section_data (abfd, tsection)
 	  && pei_section_data (abfd, tsection))
 	{
-	  if (bfd_malloc_and_get_section (abfd, tsection, & tdata))
-	    {
 	      int xx = (begin_addr - 8) - tsection->vma;
+	  bfd_byte *tdata;
 
 	      tdata = (bfd_byte *) bfd_malloc (8);
-	      if (bfd_get_section_contents (abfd, tsection, tdata, (bfd_vma) xx, 8))
+	  if (tdata)
+	    {
+	      if (bfd_get_section_contents (abfd, tsection,
+					    tdata, (bfd_vma) xx, 8))
 		{
 		  bfd_vma eh, eh_data;
 
@@ -1883,11 +1880,6 @@ _bfd_XX_print_ce_compressed_pdata (bfd *
 		}
 	      free (tdata);
 	    }
-	  else
-	    {
-	      if (tdata)
-		free (tdata);
-	    }
 	}
 
       fprintf (file, "\n");

-- 
Alan Modra
Australia Development Lab, IBM


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