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https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-06-23 20:38:33 +02:00
58381ff7b6
and 4080. The compatibility differences are:
a) writing a chararray which is zero-based but not zero-
terminated does not cause a buffer overflow
b) non-zero-based chararrays can also be read
The difference was that previously, all chararrays were treated
as pchars. In TP/Delphi (and now also in FPC), this is only done
for zero-based chararrays. For non-zero-based ones, the entire
contents of the array should always be used (including #0's).
The default parameters in the system unit for the chararray
helpers are to avoid having to use a define for bootstrapping.
git-svn-id: trunk@2152 -
50 lines
792 B
ObjectPascal
50 lines
792 B
ObjectPascal
program tw4080;
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{$i+}
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{$ifdef unix}
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uses
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cwstring;
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{$endif unix}
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var
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S, S2 : array [1..15] of char;
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f: text;
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f2: file;
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l: longint;
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str: shortstring;
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astr: ansistring;
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wstr: widestring;
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begin
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S := 'string1'#0'string2';
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assign(f,'tw4080.out');
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rewrite(f);
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write (f,S);
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close(f);
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assign(f2,'tw4080.out');
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reset(f2,1);
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if (filesize(f2) <> 15) then
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halt(1);
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blockread(f2,s2,sizeof(s2));
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close(f2);
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erase(f2);
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for l := low(s) to high(s) do
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if s[l] <> s2[l] then
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halt(1);
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str := s;
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for l := low(s) to high(s) do
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if s[l] <> str[l] then
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halt(1);
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astr := s;
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for l := low(s) to high(s) do
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if s[l] <> astr[l] then
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halt(1);
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wstr := s;
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for l := low(s) to high(s) do
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if s[l] <> wstr[l] then
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halt(1);
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end.
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