Try to open https://bugs.freedesktop.org/attachment.cgi?id=93188 (from bug 74336) on a 64-bit operating system (tested both on Mac and on Linux). The CPU will be at 100% for a very-very long time, after hours the graph, which is a WMF image, is rendered. On 32-bit systems (tested on Mac, Windows, and Linux), the graph appears almost immediately. Git bisect showed that bug was triggered by 09c722873b2d378d2d155f5f1dd7d8f3fb2012e9. However, I think that it only made the bug visible, the problem is elsewhere.
Tomaž Vajngerl committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=fa632a57b7fcbc0a790fc6615174f25b7f640713 fdo#77088 WMF - replace 32-bit min/max assumption with const The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Tomaž Vajngerl committed a patch related to this issue. It has been pushed to "libreoffice-4-2": http://cgit.freedesktop.org/libreoffice/core/commit/?id=10e38e72f4f940bf7bbf9865d76c17a731c3200b&h=libreoffice-4-2 fdo#77088 WMF - replace 32-bit min/max assumption with const It will be available in LibreOffice 4.2.5. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.