Regression on i686 host: gdb.base/floatn.exp: [RFC v2][2/2] Target FP: Make use of MPFR if available

Ulrich Weigand uweigand@de.ibm.com
Mon Dec 11 14:30:00 GMT 2017


> Jan Kratochvil wrote:
> > On Sun, 10 Dec 2017 16:09:56 +0100, Jan Kratochvil wrote:
> > > Hi Ulrich,
> > > 
> > > 2400729ecfd2c7be8b18aeaa822fef5a4b503f8a is the first bad commit
> > > commit 2400729ecfd2c7be8b18aeaa822fef5a4b503f8a
> > > Author: Ulrich Weigand <ulrich.weigand@de.ibm.com>
> > > Date:   Wed Nov 22 13:53:43 2017 +0100
> > >     Target FP: Make use of MPFR if available
> > > 
> > > FAIL: gdb.base/floatn.exp: the original value of f128 is 3.375
> > > FAIL: gdb.base/floatn.exp: try to change f128 to -3.375 with 'print f128=-3.375'
> > > FAIL: gdb.base/floatn.exp: the value of f128 is changed to 30.375
> > > FAIL: gdb.base/floatn.exp: the original value of c128 is 3.375 + 1 * I
> > 
> > I have seen now also there, that will be probably the same, I did not check
> > more:
> > 	-PASS: gdb.base/float128.exp: try to change f128 to -2.375 with 'print f128=-2.375l'
> > 	+FAIL: gdb.base/float128.exp: try to change f128 to -2.375 with 'print f128=-2.375l'
> > 	-PASS: gdb.base/float128.exp: the value of f128 is changed to 20.375
> > 	+FAIL: gdb.base/float128.exp: the value of f128 is changed to 20.375
> > 	+FAIL: gdb.base/float128.exp: print large128
> 
> Hi Jan,
> 
> I was able to reproduce this problem by building GDB itself as a 32-bit binary.
> 
> I'm currently testing a fix ...

Fix pushed as f2f9e7ecc1f02bfe5da83c38cf356ea96d428c6d.

Bye,
Ulrich

-- 
  Dr. Ulrich Weigand
  GNU/Linux compilers and toolchain
  Ulrich.Weigand@de.ibm.com



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