https://bugs.kde.org/show_bug.cgi?id=405182
Bug ID: 405182
Summary: Valgrind fails to build with Clang
Product: valgrind
Version: unspecified
Platform: Other
OS: FreeBSD
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: ema...@freebsd.org
Target Milestone: ---
Created attachment 118631
--> https://bugs.kde.org/attachment.cgi?id=118631&action=edit
cast patch to fix Clang failure
SUMMARY
Clang/LLVM fails an assertion when compiling my_offsetof in
VEX/auxprogs/genoffsets.c.
STEPS TO REPRODUCE
1. Build Valgrind with Clang (tested on FreeBSD with Clang 8.0)
OBSERVED RESULT
Clang assertion failure:
Assertion failed: (EVResult.Val.isInt() && "Expression did not evaluate to
integer"), function EvaluateKnownConstInt, file
/home/dim/src/llvm/trunk/tools/clang/lib/AST/ExprConstant.cpp, line 11056.
EXPECTED RESULT
Valgrind builds
The assertion failure is a Clang bug, but the fix is probably to emit a
diagnostic message instead. Details in
https://bugs.llvm.org/show_bug.cgi?id=40890. Attached patch copies cast from
the other my_offsetof definition (from none/tests/x86/x87trigOOR.c).
SOFTWARE/OS VERSIONS
FreeBSD 12.0
ADDITIONAL INFORMATION
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