From: "Peter C. Chapin" <PChapin@vtc.vsc.edu>
Subject: GNAT.Regpat problem.
Date: Tue, 22 Mar 2011 14:35:15 -0400
Date: 2011-03-22T14:35:15-04:00 [thread overview]
Message-ID: <alpine.WNT.2.00.1103221429170.5412@WHIRLWIND> (raw)
I'm trying to use regular expressions in a program via the package
GNAT.Regpat. Here is a reduced example:
with Ada.Text_IO; use Ada.Text_IO;
with GNAT.Regpat;
procedure Check is
Matcher : GNAT.Regpat.Pattern_Matcher(10);
begin
GNAT.Regpat.Compile(Matcher, "^[:space:]*xyzzy$");
exception
when Storage_Error =>
Put_Line("Insufficient space in Pattern_Matcher");
end Check;
The documentation for package GNAT.Regpat says this about the Compile
procedure I think I'm using: "This function [sic] raises Storage_Error if
Matcher is too small to hold the resulting code (i.e. Matcher.Size has too
small a value)."
In the example above the size is intentionally set too small. My program
fails with a PROGRAM_ERROR exception (EXCEPTION_ACCESS_VIOLATION). If I make
the size of the Matcher just 1, the program hangs. If I make the size
something reasonable, the program runs fine.
So is this an issue with GNAT.Regpat? It seems like it does not honor its
documentation. Perhaps I'm doing something wrong.
Peter
next reply other threads:[~2011-03-22 18:35 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-22 18:35 Peter C. Chapin [this message]
2011-03-22 19:01 ` GNAT.Regpat problem Georg Bauhaus
2011-03-22 19:17 ` Florian Weimer
2011-03-22 19:21 ` Adam Beneschan
2011-03-22 20:31 ` Simon Wright
2011-03-24 10:23 ` Peter C. Chapin
2011-03-24 10:43 ` Dmitry A. Kazakov
2011-03-24 14:04 ` Peter C. Chapin
2011-03-24 14:34 ` Dmitry A. Kazakov
2011-03-24 16:20 ` Georg Bauhaus
2011-03-24 17:37 ` Dmitry A. Kazakov
2011-03-24 21:12 ` Peter C. Chapin
2011-03-25 9:02 ` Dmitry A. Kazakov
2011-03-24 16:41 ` Georg Bauhaus
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