http://d.puremagic.com/issues/show_bug.cgi?id=6944
Summary: stdio.File.byLine can't handle an empty file Product: D Version: unspecified Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: Phobos AssignedTo: nob...@puremagic.com ReportedBy: jmdavisp...@gmx.com --- Comment #0 from Jonathan M Davis <jmdavisp...@gmx.com> 2011-11-13 19:56:59 PST --- This program import std.file; import std.stdio; void main() { std.file.write("empty.txt", ""); auto file = File("empty.txt"); foreach(line; file.byLine()) writeln(line); } results in this output: core.exception.AssertError@std/stdio.d(946): Bug in File.readln ---------------- ./q(_d_assert_msg+0x1f) [0x4595cb] ./q(void std.stdio.File.ByLine!(char, char).ByLine.popFront()+0xa6) [0x4560a2] ./q(char[] std.stdio.File.ByLine!(char, char).ByLine.front()+0x4c) [0x455fec] ./q(_Dmain+0x87) [0x455e13] ./q(extern (C) int rt.dmain2.main(int, char**).void runMain()+0x17) [0x459bd7] ./q(extern (C) int rt.dmain2.main(int, char**).void tryExec(scope void delegate())+0x2a) [0x45977e] ./q(extern (C) int rt.dmain2.main(int, char**).void runAll()+0x42) [0x459c2a] ./q(extern (C) int rt.dmain2.main(int, char**).void tryExec(scope void delegate())+0x2a) [0x45977e] ./q(main+0xd3) [0x45970f] /lib/libc.so.6(__libc_start_main+0xed) [0x7ff97772817d]d The foreach should just not run, since it's effectively iterating over an empty range, but apparently ByLine's empty doesn't check the possibility that EOF has already been reached - just whether the file is open or not. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------