patches/gcc/4.2.4/300-fortran-signed-TImode.patch
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Tue Jul 31 22:27:29 2012 +0200 (2012-07-31)
changeset 3018 7776e8369284
parent 687 b2b6b1d46aa1
permissions -rw-r--r--
complibs/cloog: create missing m4 dir

Because we now patch configure.in and configure, the Makefile quicks
in a re-build rule as the source files are now more recent than the
bundled generated files, and that fails because the m4 directory
is missing, although on some systems where aclocal is not installed,
the re-build rule does nothing (except a warning).

Always create tht directory.

Reported-by: Per Arnold Blaasmo <per-arnold.blaasmo@atmel.com>
[Also thanks to Thomas De Schampheleire <patrickdepinguin@gmail.com>
for some digging works on this issue]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
     1 Fix building gfortran for ARM.
     2 http://gcc.gnu.org/ml/gcc-patches/2007-05/msg01010.html
     3 ----
     4 
     5 The patch below fixes a crash building libgfortran on arm-linux-gnueabi.
     6 
     7 This target doesn't really have a 128-bit integer type, however it does use 
     8 TImode to represent the return value of certain special ABI defined library 
     9 functions. This results in type_for_size(TImode) being called.
    10 
    11 Because TImode deosn't correspond to any gfortran integer kind 
    12 gfc_type_for_size returns NULL and we segfault shortly after.
    13 
    14 The patch below fixes this by making gfc_type_for_size handle TImode in the 
    15 same way as the C frontend.
    16 
    17 Tested on x86_64-linux and arm-linux-gnueabi.
    18 Applied to trunk.
    19 
    20 Paul
    21 
    22 2007-05-15  Paul Brook  <paul@codesourcery.com>
    23 
    24     gcc/fortran/
    25     * trans-types.c (gfc_type_for_size): Handle signed TImode.
    26 
    27 diff -durN gcc-4.2.3.old/gcc/fortran/trans-types.c gcc-4.2.3/gcc/fortran/trans-types.c
    28 --- gcc-4.2.3.old/gcc/fortran/trans-types.c	2007-08-31 10:27:50.000000000 +0200
    29 +++ gcc-4.2.3/gcc/fortran/trans-types.c	2008-07-17 09:54:20.000000000 +0200
    30 @@ -1799,6 +1799,13 @@
    31  	  if (type && bits == TYPE_PRECISION (type))
    32  	    return type;
    33  	}
    34 +
    35 +	/* Handle TImode as a special case because it is used by some backends
    36 +	   (eg. ARM) even though it is not available for normal use.  */
    37 +#if HOST_BITS_PER_WIDE_INT >= 64
    38 +	if (bits == TYPE_PRECISION (intTI_type_node))
    39 +	  return intTI_type_node;
    40 +#endif
    41      }
    42    else
    43      {