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// { dg-do compile }

// -fpack-struct is necessary because the code below assumes the initial

// packing is larger than 1, which cannot ge guaranteed for all targets.

// { dg-options "-Wabi -fabi-version=1 -fpack-struct=8" }

// On ARM processors, the alignment of B will be 4 even though it

// contains only a single "char".  That would avoids the situation

// that the warning below is designed to catch.  We therefore

// explicitly set the default structure alignment to 1.

// { dg-options "-Wabi -fabi-version=1 -mstructure-size-boundary=8" { target arm*-*-* } }

struct A { virtual void f(); char c1; };

struct B { B(); char c2; };

struct C : public A, public virtual B {}; // { dg-warning "ABI" }