The JEMALLOC_USES_MAP_ALIGN code has turned out to be worse than useless, and in fact it breaks 64-bit SunOS. It's very old and turned out not to be needed anymore because the way the memory allocator works has changed since it was implemented. It prevented a fix I tried for 48-bit addressing from working properly. However, without either this code or the 48-bit addressing fix, the 64-bit version won't even start, which is why I thought the code was still needed.
https://bugzilla.mozilla.org/show_bug.cgi?id=457189https://hg.mozilla.org/mozilla-central/rev/a26c500b98ab
The 48-bit addressing fix is based on code found here:
https://github.com/OpenIndiana/oi-userland/blob/oi/hipster/components/web/firefox/patches/patch-js_src_gc_Memory.cpp.patch
I already applied these changes to js/src/gc/Memory.cpp, but as I was looking through jemalloc.c I saw that there were very similar ifdefs for Linux on SPARC as the ones I'd had to enaable in Memory.cpp, but for whatever reason the patches I found didn't touch them. So I tried doing for jemalloc.c what was already done for Memory.cpp, and it worked (but only after I removed the map align code).
This repository holds the code for a unified application platform for XUL-based
applications. It is a hard fork from the Mozilla code repository (mozilla-central)
with an ESR-52 fork point.
In addition to further development based on the Mozilla upstream code, and
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