node-sass: Segmentation fault when compiling susy

node-sass 4.5.0 (and 4.4.0) fails to compile susy 2.2.12 with a segfault.

Steps to reproduce:

1. Create a Dockerfile:

FROM alpine:3.5
RUN apk add --no-cache nodejs
RUN npm i node-sass@4.5.0 susy@2.2.12
RUN node_modules/.bin/node-sass  node_modules/susy/sass/_susy.scss

1. Run it:

$ docker build .
...
Step 4/4 : RUN node_modules/.bin/node-sass  node_modules/susy/sass/_susy.scss
 ---> Running in a20e432a5a46
Segmentation fault
The command '/bin/sh -c node_modules/.bin/node-sass  node_modules/susy/sass/_susy.scss' returned a non-zero code: 139

If you replace node-sass version with 4.3.0 it compiles fine. Also, I didn’t manage to repeat this on Ubuntu so it might be Alpine Linux-specific.

Please note that I deliberately trimmed the example. Of course there’s no point to compile susy from command line in real world. But it crashes the same way in full webpack environment as well.

• NPM version (npm -v): 3.10.9
• Node version (node -v): v6.9.2
• Node Process (node -p process.versions): { http_parser: ‘2.7.1’, node: ‘6.9.2’, v8: ‘5.1.281.88’, uv: ‘1.9.1’, zlib: ‘1.2.8’, ares: ‘1.10.1-DEV’, icu: ‘57.1’, modules: ‘48’, openssl: ‘1.0.2j’ }
• Node Platform (node -p process.platform): linux
• Node architecture (node -p process.arch): x64
• node-sass version (node -p "require('node-sass').info"): node-sass 4.5.0 (Wrapper) [JavaScript] libsass 3.5.0.beta.2 (Sass Compiler) [C/C++]
• npm node-sass versions (npm ls node-sass): / `-- node-sass@4.5.0