[gfortran, patch] Fix -ff2c type mismatches

[Steve Kargl]

On Tue, Feb 27, 2007 at 06:23:05PM +0100, Tobias Schl?ter wrote:
> Steve Kargl wrote:
> >On Sun, Dec 17, 2006 at 08:21:08PM +0100, Tobias Schl?ter wrote:
> >>f2c calling conventions require that a scalar default REAL function  
> >>actually returns the C type double.  Our current implementation makes  
> >>the function symbol's backend_decl of type double, which in the case  
> >>of no explicit RESULT variable leads to all kinds of type mismatches.   
> >>This patch fixes this, by only making the function REAL*8, not the  
> >>RESULT variable, and then converting the result variable to REAL*8  
> >>when passing it to the function result.
> >>
> >>Built and tested on i386-darwin, this passes the testsuite except for  
> >>the failures which are due to PR29516.  Ok?
> >>
> >
> >OK.
> >
> >Note, this bootstrapped and passed regression testing on x86_64-*-freebsd.
> >
> >Tobi, this might be considered a regression with respect to g77
> >(although I believe g77 did not support RESULT).  I'll leave it
> >to your discretion whether to backport to the 4.2 branch.
> 
> Unless somebody objects, I'll put the patch into 4.1 as well.  People in 
> the Real World are using 4.1, and the bug seems to affect them.
> 

I have no objections.

-- 
Steve