237213 2022-02-25 09:23:44 -0800 CSSStyleDeclaration+PropertyNames.idl: 1 input keys have identical hash values, examine output carefully... 2025-09-02 12:24:39 -0700 1 1 1 Unclassified WebKit CSS WebKit Nightly Build All All RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=298246 InRadar P2 Normal --- 1 mcatanzaro ddkilzer ap berto cdumez cgarcia darin gsnedders koivisto mcatanzaro sam simon.fraser webkit-bug-importer oldest_to_newest 1846047 0 mcatanzaro 2022-02-25 09:23:44 -0800 We should figure out what is going wrong with CSSStyleDeclaration+PropertyNames.idl: [327/2481] Generating ../../WebCore/DerivedSources/CSSProp...bCore/DerivedSources/CSSStyleDeclaration+PropertyNames.idl 1 input keys have identical hash values, examine output carefully... 1846051 1 mcatanzaro 2022-02-25 09:28:29 -0800 The generated file says: // This file is automatically generated from CSSProperties.json by the makeprop.pl script. Do not edit it. However, we have no clear way to know what "input keys" are problematic here. I've failed to even find the source of this warning. We don't appear to have the strings "identical hash values" or "examine output carefully" anywhere in WebKit, nor even anywhere in Debian (I tried codesearch.debian.net), so it is unclear where this warning is coming from. 1846058 2 gsnedders 2022-02-25 09:52:31 -0800 My guess would be that it's from gperf, but I haven't looked into this. 1846059 3 webkit-bug-importer 2022-02-25 09:53:14 -0800 <rdar://problem/89479324> 1904112 4 ap 2022-10-07 11:58:29 -0700 Somewhat long shot, but any chance for bug 245803 to be caused by this? If so, this seems seriously bad, as it changes observable behavior. I have no idea about how to "examine output carefully" here. 1904148 5 mcatanzaro 2022-10-07 14:02:32 -0700 The output files are: ${WebCore_DERIVED_SOURCES_DIR}/CSSProperties.json ${WebCore_DERIVED_SOURCES_DIR}/CSSPropertyNames.h ${WebCore_DERIVED_SOURCES_DIR}/CSSPropertyNames.cpp ${WebCore_DERIVED_SOURCES_DIR}/CSSPropertyNames.gperf ${WebCore_DERIVED_SOURCES_DIR}/StyleBuilderGenerated.cpp ${WebCore_DERIVED_SOURCES_DIR}/StylePropertyShorthandFunctions.h ${WebCore_DERIVED_SOURCES_DIR}/StylePropertyShorthandFunctions.cpp ${WebCore_DERIVED_SOURCES_DIR}/CSSStyleDeclaration+PropertyNames.idl Of which CSSStyleDeclaration+PropertyNames.idl might possibly be related to bug #245803. 1904213 6 gsnedders 2022-10-07 21:07:01 -0700 (In reply to Michael Catanzaro from comment #1) > The generated file says: > > // This file is automatically generated from CSSProperties.json by the > makeprop.pl script. Do not edit it. > > However, we have no clear way to know what "input keys" are problematic > here. I've failed to even find the source of this warning. We don't appear > to have the strings "identical hash values" or "examine output carefully" > anywhere in WebKit, nor even anywhere in Debian (I tried > codesearch.debian.net), so it is unclear where this warning is coming from. https://git.savannah.gnu.org/gitweb/?p=gperf.git;a=blob;f=src/search.cc;h=c2459701036d3f7e2dbd35f78fc8d6168c2bd7e6;hb=refs/tags/v3.0.3#l796 1905845 7 djg 2022-10-15 01:57:55 -0700 Pull request: https://github.com/WebKit/WebKit/pull/5415 1905853 8 ews-feeder 2022-10-15 07:31:48 -0700 Committed 255578@main (bd3be165cd17): <https://commits.webkit.org/255578@main> Reviewed commits have been landed. Closing PR #5415 and removing active labels. 2140334 9 ddkilzer 2025-09-02 12:17:43 -0700 <rdar://problem/159680551> 2140336 10 ddkilzer 2025-09-02 12:18:15 -0700 Re-opening for pull request https://github.com/WebKit/WebKit/pull/50194 2140337 11 ddkilzer 2025-09-02 12:24:39 -0700 Sorry, answered the question from `git-webkit` incorrectly.