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Date: Thu, 16 Mar 2006 12:29:00 -0000
Subject: [Bug libfortran/26712]  New: gfortran on mac intel runtime floating point exception when  printing
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All attempts to run code compiled with gfortran fail if there is a floating
point print.  This seems to be 
due to a floating point underflow exception being invoked.

cat test.f
      program test
      real a
      a = 10.0
      print *,a
      stop
      end

gdb stack trace follows:

(gdb) run
Starting program: /Users/charlesb/a.out 
Reading symbols for shared libraries .++ done

Program received signal EXC_ARITHMETIC, Arithmetic exception.
0x900e5158 in __gdtoa ()
(gdb) where
#0  0x900e5158 in __gdtoa ()
#1  0x900e47f8 in __ldtoa ()
#2  0x9000c947 in __vfprintf ()
#3  0x9000baf0 in sprintf ()
#4  0x0024d968 in output_float (dtp=0xbfffefb0, f=0x400390, value=10) at
../../../gcc-4.1.0/
libgfortran/io/write.c:472
#5  0x0024e597 in write_float (dtp=0xbfffefb0, f=0xbfffef08, source=0x3ff40000
<Address 
0x3ff40000 out of bounds>, len=4) at
../../../gcc-4.1.0/libgfortran/io/write.c:898
#6  0x0024e6a9 in write_real (dtp=0xbfffefb0, source=0xbfffe368 "",
length=1072955392) at ../../../
gcc-4.1.0/libgfortran/io/write.c:1390
#7  0x0024f06d in *__gfortrani_list_formatted_write (dtp=0xbfffefb0,
type=BT_REAL, p=0xbffff0c0, 
kind=4, size=4, nelems=1) at ../../../gcc-4.1.0/libgfortran/io/write.c:1460
#8  0x002486f0 in *__gfortran_transfer_real (dtp=0xbfffefb0, p=0xbffff0c0,
kind=4) at ../../../
gcc-4.1.0/libgfortran/io/transfer.c:1079
#9  0x00001ebb in MAIN__ () at test.f:4
#10 0x00001efc in main (argc=-1073745608, argv=0x1de6) at
../../../gcc-4.1.0/libgfortran/fmain.c:
18

Specs of compiler version:
Using built-in specs.
Target: i386-apple-darwin8.5.1
Configured with: ../gcc-4.1.0/configure --enable-languages=c,c++,fortran,java
Thread model: posix
gcc version 4.1.0


-- 
           Summary: gfortran on mac intel runtime floating point exception
                    when  printing
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libfortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ccb at dl dot ac dot uk
 GCC build triplet: i386-apple-darwin8.5.1
  GCC host triplet: i386-apple-darwin8.5.1
GCC target triplet: i386-apple-darwin8.5.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26712