Bug 157650 – REGRESSION: Web Inspector: Fails to load sourceMappingURL with relative URL

• Component: Web Inspector
• Status: RESOLVED FIXED

[Joseph Pecoraro]

Created attachment 278789 [details]
[TEST] Test Case

* SUMMARY
Fails to load sourceMappingURL with relative URL.

* TEST
- index.html
  - assets/
    - style.css
    - style.css.map

Inside: style.css
/*# sourceMappingURL=assets/style.css.map */

* STEPS TO REPRODUCE
1. Inspect index.html
2. Show Resources
3. Reload
  => Source Map failed to load
  => Error shows wrong URL "/style.css.map" instead of "/assets/style.css.map"

* NOTES
Spec says the sourceMappingURL should be resolved relative to the resource it is in:
<https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit>

> When the source mapping URL is not absolute, then it is relative to the generated
> code’s “source origin”. The source origin is determined by one of the following cases:

>   If the generated source is not associated with a script element that has a “src” attribute
>   and there exists a //# sourceURL comment in the generated code, that comment should be used
>   to determine the source origin. Note: Previously, this was “//@ sourceURL”, as with
>   “//@ sourceMappingURL”, it is reasonable to accept both but //# is preferred.
>   
>   If the generated code is associated with a script element and the script element has a
>   “src” attribute, the “src” attribute of the script element will be the source origin.
>   
>   If the generated code is associated with a script element and the script element does
>   not have a “src” attribute, then the source origin will be the page’s origin.
>   
>   If the generated code is being evaluated as a string with the eval() function or via
>   new Function(), then the source origin will be the page’s origin.

[Joseph Pecoraro]

<rdar://problem/26133763>

[Joseph Pecoraro]

Created attachment 278791 [details]
[PATCH] Proposed Fix

[WebKit Commit Bot]

Comment on attachment 278791 [details]
[PATCH] Proposed Fix

Clearing flags on attachment: 278791

Committed r200806: <http://trac.webkit.org/changeset/200806>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Joseph Pecoraro]

*** Bug 159066 has been marked as a duplicate of this bug. ***