Bug 209686

Summary: www/webkit2-gtk3: Fix build with libc++ 3.8.0
Product: Ports & Packages Reporter: Dimitry Andric <dim>
Component: Individual Port(s)Assignee: Dimitry Andric <dim>
Status: Closed FIXED    
Severity: Affects Some People CC: mikhail.rokhin, rm
Priority: --- Flags: bugzilla: maintainer-feedback? (gnome)
Version: Latest   
Hardware: Any   
OS: Any   
See Also: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215351
Bug Depends on:    
Bug Blocks: 208158    
Attachments:
Description Flags
Fix type for pow() call in www/webkit2-gtk3 none

Description Dimitry Andric freebsd_committer freebsd_triage 2016-05-21 22:59:53 UTC 
Created attachment 170534 [details]
Fix type for pow() call in www/webkit2-gtk3

During the exp-run in bug 208158, it was found that www/webkit2-gtk3 gives errors with libc++ 3.8.0 [1]:

/wrkdirs/usr/ports/www/webkit2-gtk3/work/webkitgtk-2.8.5/Source/WebCore/rendering/shapes/BoxShape.cpp:46:40: error: call to 'pow' is ambiguous
        return radius + (margin * (1 + pow(ratio - 1, 3)));
                                       ^~~

This is because ratio is of type LayoutUnit, which is a class that has both conversions to float and double.  Therefore, it is ambiguous if pow(float) or pow(double) should be called.  Fix it by explicitly casting to float, since it seems that most of the LayoutUnit handling is done with it.

[1] http://package18.nyi.freebsd.org/data/headamd64PR208158-default/2016-05-01_10h29m48s/logs/errors/webkit2-gtk3-2.8.5_2.log
Comment 1 Antoine Brodin freebsd_committer freebsd_triage 2016-06-05 07:26:41 UTC 
*** Bug 209972 has been marked as a duplicate of this bug. ***
Comment 2 commit-hook freebsd_committer freebsd_triage 2016-06-05 19:12:29 UTC 
A commit references this bug:

Author: sbruno
Date: Sun Jun  5 19:11:57 UTC 2016
New revision: 416418
URL: https://svnweb.freebsd.org/changeset/ports/416418

Log:
  Add explicit cast to float to repair build with libc++ 3.8.0

  PR:		209686
  Submitted by:	dim

Changes:
  head/www/webkit2-gtk3/Makefile
  head/www/webkit2-gtk3/files/patch-Source_WebCore_rendering_shapes_BoxShape.cpp
Comment 3 Ruslan Makhmatkhanov freebsd_committer freebsd_triage 2016-06-07 09:19:29 UTC 
Assign to dim@ and close, as the fix was committed.