Bug #16765: Crash when use sass image-url in email layout

• Status: Closed
• Priority: Normal
• Assignee: -
• Target version: -
• ruby -v: ruby 2.5.7p206 (2019-10-01 revision 67816) [x86_64-darwin18]
• Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN

[chellgouda (Mitchell Gould)]

I have the following layout I use for my emails:

mailer.html.slim

doctype html
html
head
meta(charset='utf-8')
meta(http-equiv="Content-Type" content="text/html")

css:

[chellgouda (Mitchell Gould)]

• ruby -v set to ruby 2.5.7p206 (2019-10-01 revision 67816) [x86_64-darwin18]
• File ruby_2020-04-06-170518_Mitchells-MacBook-Pro-3.crash ruby_2020-04-06-170518_Mitchells-MacBook-Pro-3.crash added

doctype html
html
head
meta(charset='utf-8')
meta(http-equiv="Content-Type" content="text/html")

scss:
  .footer-box:after {
    content: '';
    width: 100%;
    height: 100%;
    opacity: 0.1;
    position: absolute;
    top: 0;
    left: 0;
    background: image-url( 'logo/gould_logo_black.png' ) no-repeat bottom 15% right -15%;
    background-size: 30%;
  }

This causes a crash

Using slim 4.0.1
Using slim-rails 3.2.0
Using sassc 2.2.1

Rails 5.2.4.2

[jeremyevans0 (Jeremy Evans)]

• Status changed from Open to Feedback

Unfortunately, the crash report does not provide the relevant debugging information:

Thread 22 Crashed:: thread_pool.rb*
0   libsystem_kernel.dylib          0x00007fff6cd2c33a __pthread_kill + 10
1   libsystem_pthread.dylib         0x00007fff6cde8e60 pthread_kill + 430
2   libsystem_c.dylib               0x00007fff6ccb3808 abort + 120
3   libruby.2.5.dylib               0x0000000106564939 die + 9
4   libruby.2.5.dylib               0x0000000106564b74 rb_bug_context + 564
5   libruby.2.5.dylib               0x0000000106659cf1 sigsegv + 81
6   libsystem_platform.dylib        0x00007fff6cddd5fd _sigtramp + 29

It does appear to be a null pointer dereference:

Exception Type:        EXC_BAD_ACCESS (SIGABRT)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000

While there isn't much to go by, it seems likely to be a bug in sassc. There are other null pointer dereference bugs on their issue tracker already: https://github.com/sass/sassc-ruby/issues

Can you reproduce this issue without sassc?

[jeremyevans0 (Jeremy Evans)]

• Status changed from Feedback to Closed