grace exiting with SIGSYS after brew update/upgrade

[tricaric]

Short version: is it possible that changes in gd from version 2.1.0 to 2.1.0_1 cause SIGSYS in grace.

I recently updated/upgraded brew, and noticed that xmgrace (from grace formula) did not work any longer because it was trying to link to older libpng15.15.dylib (formula libpng), which had been updated to v16. So I reinstalled grace from brew, and this time it ran but exited immediately with SIGSYS.

Could not find a fix of the problem so I restored a local backup from Mar 20, 2014, and all was working fine. So tried to isolate the issue, and "brew outdated" reports:

gd (2.1.0 < 2.1.0_1)
gdal (1.10.1 < 1.10.1_1)
ghostscript (9.07, 9.10 < 9.10_1)
libpng (1.5.17, 1.5.18 < 1.6.10)
s-lang (2.2.4 < 2.2.4_1)
ssh-copy-id (6.3p1, 6.4p1, 6.5p1 < 6.6p1)

The relevant ones here are gd and libpng.

brew upgrade gd
==> Upgrading 1 outdated package, with result:
gd 2.1.0_1
==> Upgrading gd
==> Installing gd dependency: libpng
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/libpng-1.6.10.mavericks.bottle.tar.gz
Already downloaded: /Library/Caches/Homebrew/libpng-1.6.10.mavericks.bottle.tar.gz
==> Pouring libpng-1.6.10.mavericks.bottle.tar.gz
🍺 /usr/local/Cellar/libpng/1.6.10: 17 files, 1.3M
==> Installing gd
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/gd-2.1.0_1.mavericks.bottle.tar.gz
Already downloaded: /Library/Caches/Homebrew/gd-2.1.0_1.mavericks.bottle.tar.gz
==> Pouring gd-2.1.0_1.mavericks.bottle.tar.gz
🍺 /usr/local/Cellar/gd/2.1.0_1: 32 files, 1.1M

but after this, xmgrace is broken again: starts and gives SIGSYS right away.

So I would say that something in
gd (2.1.0 < 2.1.0_1)
libpng (1.5.17, 1.5.18 < 1.6.10)

I am now forcing libpng 1.5.17 as before upgrade, but cannot force gd 2.1.0 (where's the formula for that?) I can try that if you help me to. What changed in gd between 2.1.0 and 2.1.0_1 ?

Thanks

[jacknagel]

The _1 in 2.1.0_1 is the formula's revision number, which was bumped to deal with the libpng 1.5 -> 1.6 transition. Otherwise 2.1.0 and 2.1.0_1 are the same.

[tricaric]

OK then it is a libpng issue I think, can anyone replicate the issue?

[jacknagel]

I can reproduce. It doesn't seem to be related to libpng, but rather the most recent clang. If I add ENV.O1 to the formula (i.e. reduce the optimization level from -Os to -O1, then xmgrace launches successfully.

[tricaric]

OK that's great, if you can update the formula I can double-check this. As long as I have a running version I don't really care if it is not optimised. Thanks a lot!

[jacknagel]

OK, brew update and try again.

[tricaric]

Confirmed, update and reinstall fixes the issue! Thanks a lot!!