http://d.puremagic.com/issues/show_bug.cgi?id=8734
Summary: Compiler must verify exe path is writable before
attempting compilation
Product: D
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from Andrej Mitrovic <[email protected]> 2012-09-28
18:30:07 PDT ---
Windows example:
test1.d:
module test;
import std.stdio;
import std.process;
void main()
{
system("echo > test.exe");
auto file = File("test.exe", "r");
system("dmd test2.d -oftest.exe");
}
test2.d:
module test2;
import std.string;
string mixMe()
{
string res;
foreach (i; 0 .. 3_000)
res ~= xformat("int i_%s;", i);
return res;
}
mixin(mixMe());
void main()
{
}
$ rdmd test1.d
OPTLINK (R) for Win32 Release 8.00.12
Copyright (C) Digital Mars 1989-2010 All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
OPTLINK : Error 3: Cannot Create File test.exe
--- errorlevel 1
test2.d demonstrates a module that takes a longer while to compile. test1.d
creates a phony test.exe, then opens it in read-mode to lock it. Then it
attempts to compile test2.d and write over test.exe.
DMD will first compile test2.d and only then attempt to write to test.exe and
fail. This can be a considerate waste of time, the compiler should check if the
output location is writable *before* attempting to compile.
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