User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:39.0) Gecko/20100101 Firefox/39.0 Build ID: 20150224030228 Steps to reproduce: https://www.khronos.org/registry/webgl/sdk/tests/conformance/attribs/gl-bindAttribLocation-aliasing.html?webglVersion=1 Actual results: Only 17 of 273 passed Expected results: Chrome passes all the tests. Firefox fails the test with both the ANGLE and OpenGL backends.

Link in 1.0.4 beta suite: - https://www.khronos.org/registry/webgl/sdk/tests/conformance/attribs/gl-bindAttribLocation-aliasing.html?webglVersion=1 Tested to fail on the following configurations: - GIADA, MACBOOK_AIR_WIN, MACBOOK_PRO_WIN, NEXUS-10, SURFACE, WINDBOX, HASWELL, HPOMEN Did not fail on the following configurations: - SPARK, MACBOOK_AIR_OSX, MACBOOK_PRO_OSX, MACMINI, MACPRO, NEXUS-4, NEXUS-5 See https://bugzilla.mozilla.org/show_bug.cgi?id=1178601 for hardware configuration details of these systems.

Reduced test case. Needs to be run inside the WebGL conformance test suite.

Failures coming from allowing linking if there are multiple attributes bound to the same index. Added a check inside WebGLProgram::LinkProgram() for such duplicates and caused link failure if one is found.

It looks like fixing Bug 1136411 will fix this problem, but fixing this bug will not fix Bug 1136411.

Still failing on Intel HD 4000 under Ubuntu 16.04 50.0a1 (2016-06-25)

Review commit: https://reviewboard.mozilla.org/r/63002/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/63002/

Try's green.

Comment on attachment 8769024 [details] Bug 1136410 - Forbid attrib aliasing. - ' https://reviewboard.mozilla.org/r/63002/#review60224

Pushed by jgilbert@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/fd20afbbe00d Forbid attrib aliasing. - r=mtseng' https://hg.mozilla.org/integration/mozilla-inbound/rev/a39f9b0037ae Build fix.

https://hg.mozilla.org/mozilla-central/rev/fd20afbbe00d https://hg.mozilla.org/mozilla-central/rev/a39f9b0037ae