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Re: [patch, libgfortran] PR60128 Wrong ouput using en edit descriptor

On Mon, 31 Mar 2014, Dominique d'Humières wrote:
> Updated gfortran.dg/fmt_en.f90 to skip some tests not
> supported on i?86-*-solaris2.9* and hppa*-*-hpux* (these tests
> assume rounding to nearest and to even on tie, AFAICT
> i?86-*-solaris2.9* rounds real(16) to zero  and hppa*-*-hpux*
> rounds all kinds to zero on tie, with some exceptions I don?t
> understand). The detection of the rounding is based on the F and
> E edit descriptors.
> OK for trunk and 4.8?

This test, after the update on 4.8 in r209070 when the test-case
was modified substantially (not really covered by the ChangeLog
entry) to be identical to that on trunk, apparently takes a
different route in the fortran run-time library on 4.8 compared
to trunk.  For 4.8, it requires more run-time support on the
target system, trigging the tell-tale error message found in
gfortran.log: "Fortran runtime error: required ftruncate or
chsize support not present" on some targets, then aborting and
flagged as a regression as it passed before that commit.
Committed to 4.8 as obvious.  Again, this is not required on trunk.

	* gfortran.dg/fmt_en.f90: Gate test on effective_target

Index: gfortran.dg/fmt_en.f90
--- gfortran.dg/fmt_en.f90	(revision 209324)
+++ gfortran.dg/fmt_en.f90	(working copy)
@@ -1,4 +1,4 @@
-! { dg-do run }
+! { dg-do run { target fd_truncate } }
 ! PR60128 Invalid outputs with EN descriptors
 ! Test case provided by Walt Brainerd.
 program pr60128

brgds, H-P

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