http://llvm.org/bugs/show_bug.cgi?id=8659
Summary: tcmalloc in Chromium segfaults when compiled with both
-fPIC and integrated-as
Product: clang
Version: trunk
Platform: Other
OS/Version: FreeBSD
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
integrated-as was turned on by default in Chromium this week
(http://crrev.com/66265), but Chromium trunk built with clang trunk 119910
segfaults right away when run on FreeBSD amd64. If I compile with clang using
no-integrated-as, Chromium works fine with the system GNU assembler.
Alternately, removing the -fPIC flag from the tcmalloc component alone also
fixes the problem. Since -fPIC doesn't pose a problem for the GNU assembler,
this is probably a bug in clang's integrated-as that is somehow surfaced by
tcmalloc, as the rest of Chromium compiles fine with the -fPIC/integrated-as
combo. Let me know what other info might help reduce this problem.
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