On Linux, run apprunner (no args). Type http://www.muzilla.org into the URL bar. Left-arrow or click to get the caret into the middle of the url. Hit the keypad enter key (not return). This inserts a garbage character into the url and then tries to go there, unsuccessfully. Exit via the menu. Now try to load apprunner again; it will crash on startup, with this stack trace: > #0 0x40dbd5f5 in nsHistoryDataSource::ReadOneHistoryFile > (this=0x8113428, > aStream=@0xbffff324, fileSpec={mPath = {mData = 0xbffff318}, > mError = 1088310344, _vptr. = 0x8113428}) > at > /builds/thu/mozilla/rdf/datasource/src/nsHistoryDataSource.cpp:658 > #1 0x40dbd421 in nsHistoryDataSource::ReadHistory (this=0x8113428) > at > /builds/thu/mozilla/rdf/datasource/src/nsHistoryDataSource.cpp:622 > #2 0x40dbce35 in nsHistoryDataSource::Init (this=0x8113428, > uri=0x400227f0 "rdf:history") > at > /builds/thu/mozilla/rdf/datasource/src/nsHistoryDataSource.cpp:477 > #3 0x40d706dc in ServiceImpl::GetDataSource (this=0x8126a60, > uri=0x400227f0 "rdf:history", aDataSource=0xbffff674) > at /builds/thu/mozilla/rdf/base/src/nsRDFService.cpp:857 > #4 0x4001e72d in nsGlobalHistory::Init (this=0x81266e0) > at /builds/thu/mozilla/xpfe/appshell/src/nsGlobalHistory.cpp:101 > #5 0x40017d8c in nsAppShellService::Initialize (this=0x8126280) > at /builds/thu/mozilla/xpfe/appshell/src/nsAppShellService.cpp:167 rm res/rdf/History/* will solve the problem; it's something in one of those files. (Sample corrupt history files have been sent to waterson.)

Wasn't checking strstr() for null pointer. Fix in hand.

Rewrote with appropriate paranoia.

verified on redhat 5.2 i386 with build 1999-05-03-08