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The patch below fixes a crash building libgfortran on arm-linux-gnueabi.
This target doesn't really have a 128-bit integer type, however it does use
TImode to represent the return value of certain special ABI defined library
functions. This results in type_for_size(TImode) being called.
Because TImode deosn't correspond to any gfortran integer kind
gfc_type_for_size returns NULL and we segfault shortly after.
The patch below fixes this by making gfc_type_for_size handle TImode in the
same way as the C frontend.
Tested on x86_64-linux and arm-linux-gnueabi.
Applied to trunk.
Paul
2007-05-15 Paul Brook <paul@codesourcery.com>
gcc/fortran/
* trans-types.c (gfc_type_for_size): Handle signed TImode.
Index: gcc-4.2.1/gcc/fortran/trans-types.c
===================================================================
--- gcc-4.2.1/gcc/fortran/trans-types.c (revision 170435)
+++ gcc-4.2.1/gcc/fortran/trans-types.c (working copy)
@@ -1800,6 +1800,13 @@ gfc_type_for_size (unsigned bits, int un
if (type && bits == TYPE_PRECISION (type))
return type;
}
+
+ /* Handle TImode as a special case because it is used by some backends
+ (eg. ARM) even though it is not available for normal use. */
+#if HOST_BITS_PER_WIDE_INT >= 64
+ if (bits == TYPE_PRECISION (intTI_type_node))
+ return intTI_type_node;
+#endif
}
else
{
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