digitalmars.D.bugs - [Issue 14630] New: Std.algorithm splitter segfault on large file
- via Digitalmars-d-bugs (44/44) May 28 2015 https://issues.dlang.org/show_bug.cgi?id=14630
https://issues.dlang.org/show_bug.cgi?id=14630 Issue ID: 14630 Summary: Std.algorithm splitter segfault on large file with mmfile, seems GC related. Product: D Version: D2 Hardware: x86 OS: Linux Status: NEW Severity: normal Priority: P1 Component: druntime Assignee: nobody puremagic.com Reporter: sprw121 gmail.com Created attachment 1524 --> https://issues.dlang.org/attachment.cgi?id=1524&action=edit Code to generate a large file that will segfault std.algorithm.splitter. I discovered that std.algorithm's splitter function segfaults when called over casted memory mapped filed. Interestingly I found this when reenabling the GC on an application we've been running for a long time with GC.disable(). The bug does not occur with GC.disable, but with GC enabled it segfaults everytime. Linked is a test program that segfaults when run in a Ubuntu 12.04 VM on a mid-2014 MBR. Seems transient when compiled with -g flag. Seems to only segfault on large files. http://dpaste.dzfl.pl/96e898051fb2 Backtrace from core dump: std.algorithm.searching.__T4findVAyaa6_61203d3d2062TAyaTaZ.find() () std.algorithm.searching.__T4findVAyaa6_61203d3d2062TAyaTaZ.find() () std.algorithm.iteration.__T8splitterVAyaa6_61203d3d2062TAyaTaZ.splitter() () --
May 28 2015