2008-05-04 Thomas Koenig <tkoenig@gcc.gnu.org>

	PR libfortran/35990
	* intrinsics/pack_generic.c:  If an extent of the source
	array is less then zero, set it to zero.  Set the source
	pointer to NULL if the source size is zero.  Set the total
	number of elements to zero if the vector has an extent
	less or equal to zero.
	* m4/pack.m4:  Set the source pointer to NULL if the
	source array is zero-sized.  Set the total number of
	elemements to zero if the vector has an extent less or
	equal to zero.
	* generated/pack_i1.c:  Regenerated.
	* generated/pack_i2.c:  Regenerated.
	* generated/pack_i4.c:  Regenerated.
	* generated/pack_i8.c:  Regenerated.
	* generated/pack_i16.c:  Regenerated.
	* generated/pack_r4.c:  Regenerated.
	* generated/pack_r8.c:  Regenerated.
	* generated/pack_r10.c:  Regenerated.
	* generated/pack_r16.c:  Regenerated.
	* generated/pack_c4.c:  Regenerated.
	* generated/pack_c8.c:  Regenerated.
	* generated/pack_c10.c:  Regenerated.
	* generated/pack_c16.c:  Regenerated.

2008-05-04  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR libfortran/35990
	* gfortran.dg/intrinsic_pack_4.f90:  New test case.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@134927 138bc75d-0d04-0410-961f-82ee72b054a4

13 files changed, 143 insertions, 13 deletions

diff --git a/libgfortran/generated/pack_c10.c b/libgfortran/generated/pack_c10.c
index c9a0c58a5b5..0bad32385d8 100644
--- a/libgfortran/generated/pack_c10.c
+++ b/libgfortran/generated/pack_c10.c
@@ -103,7 +103,6 @@ pack_c10 (gfc_array_c10 *ret, const gfc_array_c10 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_c10 (gfc_array_c10 *ret, const gfc_array_c10 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_c10 (gfc_array_c10 *ret, const gfc_array_c10 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_c10 (gfc_array_c10 *ret, const gfc_array_c10 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_c16.c b/libgfortran/generated/pack_c16.c
index 2996be2d220..a0c87ec8a26 100644
--- a/libgfortran/generated/pack_c16.c
+++ b/libgfortran/generated/pack_c16.c
@@ -103,7 +103,6 @@ pack_c16 (gfc_array_c16 *ret, const gfc_array_c16 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_c16 (gfc_array_c16 *ret, const gfc_array_c16 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_c16 (gfc_array_c16 *ret, const gfc_array_c16 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_c16 (gfc_array_c16 *ret, const gfc_array_c16 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_c4.c b/libgfortran/generated/pack_c4.c
index ee41c0b8cbf..2fb6a20ad9c 100644
--- a/libgfortran/generated/pack_c4.c
+++ b/libgfortran/generated/pack_c4.c
@@ -103,7 +103,6 @@ pack_c4 (gfc_array_c4 *ret, const gfc_array_c4 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_c4 (gfc_array_c4 *ret, const gfc_array_c4 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_c4 (gfc_array_c4 *ret, const gfc_array_c4 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_c4 (gfc_array_c4 *ret, const gfc_array_c4 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_c8.c b/libgfortran/generated/pack_c8.c
index a129422e04f..1a4e78ec792 100644
--- a/libgfortran/generated/pack_c8.c
+++ b/libgfortran/generated/pack_c8.c
@@ -103,7 +103,6 @@ pack_c8 (gfc_array_c8 *ret, const gfc_array_c8 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_c8 (gfc_array_c8 *ret, const gfc_array_c8 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_c8 (gfc_array_c8 *ret, const gfc_array_c8 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_c8 (gfc_array_c8 *ret, const gfc_array_c8 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_i1.c b/libgfortran/generated/pack_i1.c
index 25d7f569de5..44c6c677e44 100644
--- a/libgfortran/generated/pack_i1.c
+++ b/libgfortran/generated/pack_i1.c
@@ -103,7 +103,6 @@ pack_i1 (gfc_array_i1 *ret, const gfc_array_i1 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_i1 (gfc_array_i1 *ret, const gfc_array_i1 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_i1 (gfc_array_i1 *ret, const gfc_array_i1 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_i1 (gfc_array_i1 *ret, const gfc_array_i1 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_i16.c b/libgfortran/generated/pack_i16.c
index 35c64ce8a9e..e9c15437977 100644
--- a/libgfortran/generated/pack_i16.c
+++ b/libgfortran/generated/pack_i16.c
@@ -103,7 +103,6 @@ pack_i16 (gfc_array_i16 *ret, const gfc_array_i16 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_i16 (gfc_array_i16 *ret, const gfc_array_i16 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_i16 (gfc_array_i16 *ret, const gfc_array_i16 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_i16 (gfc_array_i16 *ret, const gfc_array_i16 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_i2.c b/libgfortran/generated/pack_i2.c
index 3a42bd38d78..51380c26ba7 100644
--- a/libgfortran/generated/pack_i2.c
+++ b/libgfortran/generated/pack_i2.c
@@ -103,7 +103,6 @@ pack_i2 (gfc_array_i2 *ret, const gfc_array_i2 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_i2 (gfc_array_i2 *ret, const gfc_array_i2 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_i2 (gfc_array_i2 *ret, const gfc_array_i2 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_i2 (gfc_array_i2 *ret, const gfc_array_i2 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_i4.c b/libgfortran/generated/pack_i4.c
index 28e09f6abec..861670d6865 100644
--- a/libgfortran/generated/pack_i4.c
+++ b/libgfortran/generated/pack_i4.c
@@ -103,7 +103,6 @@ pack_i4 (gfc_array_i4 *ret, const gfc_array_i4 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_i4 (gfc_array_i4 *ret, const gfc_array_i4 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_i4 (gfc_array_i4 *ret, const gfc_array_i4 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_i4 (gfc_array_i4 *ret, const gfc_array_i4 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_i8.c b/libgfortran/generated/pack_i8.c
index 44fc430782f..c547f3809f2 100644
--- a/libgfortran/generated/pack_i8.c
+++ b/libgfortran/generated/pack_i8.c
@@ -103,7 +103,6 @@ pack_i8 (gfc_array_i8 *ret, const gfc_array_i8 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_i8 (gfc_array_i8 *ret, const gfc_array_i8 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_i8 (gfc_array_i8 *ret, const gfc_array_i8 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_i8 (gfc_array_i8 *ret, const gfc_array_i8 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_r10.c b/libgfortran/generated/pack_r10.c
index 72fe254d918..4b8c5784aef 100644
--- a/libgfortran/generated/pack_r10.c
+++ b/libgfortran/generated/pack_r10.c
@@ -103,7 +103,6 @@ pack_r10 (gfc_array_r10 *ret, const gfc_array_r10 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_r10 (gfc_array_r10 *ret, const gfc_array_r10 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_r10 (gfc_array_r10 *ret, const gfc_array_r10 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_r10 (gfc_array_r10 *ret, const gfc_array_r10 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_r16.c b/libgfortran/generated/pack_r16.c
index 0ced53ab017..a691f7c4041 100644
--- a/libgfortran/generated/pack_r16.c
+++ b/libgfortran/generated/pack_r16.c
@@ -103,7 +103,6 @@ pack_r16 (gfc_array_r16 *ret, const gfc_array_r16 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_r16 (gfc_array_r16 *ret, const gfc_array_r16 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_r16 (gfc_array_r16 *ret, const gfc_array_r16 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_r16 (gfc_array_r16 *ret, const gfc_array_r16 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_r4.c b/libgfortran/generated/pack_r4.c
index 17172ed92a8..c008aadf4d4 100644
--- a/libgfortran/generated/pack_r4.c
+++ b/libgfortran/generated/pack_r4.c
@@ -103,7 +103,6 @@ pack_r4 (gfc_array_r4 *ret, const gfc_array_r4 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_r4 (gfc_array_r4 *ret, const gfc_array_r4 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_r4 (gfc_array_r4 *ret, const gfc_array_r4 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_r4 (gfc_array_r4 *ret, const gfc_array_r4 *array,
 }
 
 #endif
+
diff --git a/libgfortran/generated/pack_r8.c b/libgfortran/generated/pack_r8.c
index 9d0fb5b5d78..7b360479628 100644
--- a/libgfortran/generated/pack_r8.c
+++ b/libgfortran/generated/pack_r8.c
@@ -103,7 +103,6 @@ pack_r8 (gfc_array_r8 *ret, const gfc_array_r8 *array,
 
   dim = GFC_DESCRIPTOR_RANK (array);
 
-  sptr = array->data;
   mptr = mask->data;
 
   /* Use the same loop for all logical types, by using GFC_LOGICAL_1
@@ -139,6 +138,11 @@ pack_r8 (gfc_array_r8 *ret, const gfc_array_r8 *array,
   if (mstride[0] == 0)
     mstride[0] = mask_kind;
 
+  if (zero_sized)
+    sptr = NULL;
+  else
+    sptr = array->data;
+
   if (ret->data == NULL || compile_options.bounds_check)
     {
       /* Count the elements, either for allocating memory or
@@ -149,6 +153,11 @@ pack_r8 (gfc_array_r8 *ret, const gfc_array_r8 *array,
 	  /* The return array will have as many
 	     elements as there are in VECTOR.  */
 	  total = vector->dim[0].ubound + 1 - vector->dim[0].lbound;
+	  if (total < 0)
+	    {
+	      total = 0;
+	      vector = NULL;
+	    }
 	}
       else
 	{
@@ -308,3 +317,4 @@ pack_r8 (gfc_array_r8 *ret, const gfc_array_r8 *array,
 }
 
 #endif
+