GNAT Compiler-Bug?

GNAT Compiler-Bug?

[Stefan Muehlebach]

I tried to compile the X11/Motif-binding from Intermetrics with the new
GNAT-Compiler 3.09.
At the File 'xt-intrinsic.ads' the following error message appeared:

xt-intrinsic.ads:447:05: warning: no more representation items for type
"XtConvertArgRec" defined at line 198
xt-intrinsic.ads:2799:05: representation item appears too late
gnatmake: "xt-intrinsic.adb" compilation error

With the old version (3.05) I had no such problems.
To solve it, I just moved the instruction from line 2799 (it was a
'pragma'-statement) up to line 199 and - voila - everything went right.

Could one of the GNAT-Gurus give me a answer to this problem?

S. Muehlebach

-- Stefan Muehlebach
-- ia94mueh@htl-bw.ch
-- Technical University of Brugg-Windisch, Switzerland

Re: GNAT Compiler-Bug?

[Pascal Obry]

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Stefan,

 GNAT 3.09 is right about this. It was a bug in GNAT 3.05. The rule is that
a representation clause *must* appear before the type is frozen.

You're fix seem good to me.

Hope this help,
Pascal.

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Re: GNAT Compiler-Bug?

[Robert Dewar]

Stefan says

<<xt-intrinsic.ads:447:05: warning: no more representation items for type
"XtConvertArgRec" defined at line 198
xt-intrinsic.ads:2799:05: representation item appears too late
gnatmake: "xt-intrinsic.adb" compilation error

With the old version (3.05) I had no such problems.
To solve it, I just moved the instruction from line 2799 (it was a
'pragma'-statement) up to line 199 and - voila - everything went right.

Could one of the GNAT-Gurus give me a answer to this problem?>>


There is no problem here. The code you quote is illegal, your fix is
the appropriate fix, and GNAT 3.05 had a bug, it did not detect the
illegality, and this bug was fixed nearly a year ago.