Segfault calling `simple-selectors()`

[chriseppstein]

simple-selectors('&:hover') causes a segfault.

In ruby Sass it gives an error:

Error: $selector: "&:hover" is not a valid selector: Invalid CSS after "": expected selector, was "&:hover" for `simple-selectors'
        on line 1 of standard input

[xzyfer]

Which version of node-sass?
Which architecture?

[xzyfer]

We're having some weird environment specific segfaults after the recent memory manager changes in LibSass.

[chriseppstein]

$ node-sass -v
node-sass	4.5.0	(Wrapper)	[JavaScript]
libsass  	3.5.0.beta.2	(Sass Compiler)	[C/C++]
$  uname -a
Darwin ceppstei-mn1 15.6.0 Darwin Kernel Version 15.6.0: Mon Jan  9 23:07:29 PST 2017; root:xnu-3248.60.11.2.1~1/RELEASE_X86_64 x86_64

[mgreter]

@xzyfer IMO so far we haven't had one real issue with the memory manager changes. This one is simply a null pointer access leading to a segfault. Fixed in sass/libsass#2318.

[xzyfer]

@mgreter as far as I can tell #1879 is related to the memory manager changes.

[xzyfer]

Fixed in 4.8.0