[LLVMbugs] [Bug 9256] clang: support -fno-strict-overflow
bugzilla-daemon at llvm.org
bugzilla-daemon at llvm.org
Sat Feb 26 00:40:57 PST 2011
http://llvm.org/bugs/show_bug.cgi?id=9256
Török Edwin <edwintorok at gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |
Summary|clang: support for kernel |clang: support
|code model: pointer |-fno-strict-overflow
|arithmetic that overflows |
|is not impossible! |
--- Comment #3 from Török Edwin <edwintorok at gmail.com> 2011-02-26 02:40:57 CST ---
(In reply to comment #2)
> Right, they should build with -fwrapv or (better yet) do the computation with
> an unsigned value.
They use -fno-strict-overflow:
# disable invalid "can't wrap" optimizations for signed / pointers
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
clang: warning: argument unused during compilation: '-fno-strict-overflow'
Should clang translate -fno-strict-overflow to -fwrapv (if it supports that)?
--
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
More information about the llvm-bugs
mailing list