[cfe-dev] Incorrect alignment when accessing a bitfield member of an unaligned struct

[Steven Watanabe]

AMDG

Compiling the attached source with
clang -cc1 -emit-llvm test.c
generates incorrect code.

Note that the load is marked align 4,
even though it's actually unaligned.

The problem is that CodeGenFunction::EmitLValueForField
discards the alignment of base when calling
EmitLValueForBitfield.

In Christ,
Steven Watanabe
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