User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 Build ID: 20170410100144 Steps to reproduce: Tab of source code in dev tools remains blank after opening for source file of GWT application debugged using Super Dev Mode. (I met this problem in context of GWT, I guess it's related to the fact that Super Dev Mode locates source maps to different server than the webpages themselves. 1. Run a gwt app 2. Run GWT Development Mode (~ start debugging user super dev mode) 3. Load app in Firefox 4. Run "Dev mode On" GWT bookmarklet, click Compile button, wait for compilation of the compilation 5. Open DevTools, Debugger tab 6. Open file http://127.0.0.1:9876/sourcemaps/webadmin/http:/127.0.0.1:9876/sourcemaps/webadmin/com/google/gwt/core/client/GWT.java (select it in left sidepanel tree) in dev tools Gwt debugger console logs following problem: "[INFO] GET /sourcemaps/webadmin/http:/127.0.0.1:9876/sourcemaps/webadmin/com/google/gwt/core/client/GWT.java [INFO] [WARN] ignored get request: /sourcemaps/webadmin/http:/127.0.0.1:9876/sourcemaps/webadmin/com/google/gwt/core/client/GWT.java" 55.0a1 (2017-04-10) (64-bit), Linux Built from https://hg.mozilla.org/mozilla-central/rev/731639fccc709a4dd95fed7e9dda88efb2227906 Actual results: "GWT.java" source tab opens, however it's empty. Also when tab is right clicked and "Copy link address" is selected, the clipboard is filled by "http://127.0.0.1:9876/sourcemaps/webadmin/http:/127.0.0.1:9876/sourcemaps/webadmin/com/google/gwt/core/client/GWT.java" I found suspicious that part of the URL, "/127.0.0.1:9876/sourcemaps" is repeated twice Expected results: Original source is shown

Last two lines of compiles source: //# sourceMappingURL=http://127.0.0.1:9876/sourcemaps/webadmin/706FE7D9AF32CEABC6306C4DF10616B4_sourcemap.json //# sourceURL=webadmin-0.js

I was able to reproduce this with the GWT sample web app, just following the directions here: http://www.gwtproject.org/gettingstarted.html

The bug is that devtools-source-map isn't resolving URLs according to the spec. I'll fix there and then land a new bundle to fix this bug.

PR here: https://github.com/devtools-html/devtools-core/pull/380

FYI, not closing this as a dup, since I plan to land a regression test in this bug.

Comment on attachment 8872734 [details] Bug 1355126 - regression test for absolute sourceRoot; https://reviewboard.mozilla.org/r/144262/#review148022 ::: devtools/client/framework/test/browser_source_map-absolute.js:11 (Diff revision 1) > +"use strict"; > + > +// Empty page > +const PAGE_URL = `${URL_ROOT}doc_empty-tab-01.html`; > +const JS_URL = `${URL_ROOT}code_binary_search_absolute.js`; > +const ORIGINAL_URL = `${URL_ROOT}code_binary_search.coffee`; Do you think it makes sense to include the original .coffee file in the commit as well for extra context and in case we want to modify it for another test?

Comment on attachment 8872734 [details] Bug 1355126 - regression test for absolute sourceRoot; https://reviewboard.mozilla.org/r/144262/#review148022 > Do you think it makes sense to include the original .coffee file in the commit as well for extra context and in case we want to modify it for another test? The coffee file is already there, this test is just a slightly modified copy of the existing `code_binary_search.js`.

I should probably test one that's been rebased on the bug fix...

Pushed by ttromey@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/657e72f1f725 regression test for absolute sourceRoot; r=bgrins