llvm/clang/test/Layout/aix-Wpacked-expecting-diagnostics.cpp
David Blaikie aee4925507 Recommit: Compress formatting of array type names (int [4] -> int[4])
Based on post-commit review discussion on
2bd8493847 with Richard Smith.

Other uses of forcing HasEmptyPlaceHolder to false seem OK to me -
they're all around pointer/reference types where the pointer/reference
token will appear at the rightmost side of the left side of the type
name, so they make nested types (eg: the "int" in "int *") behave as
though there is a non-empty placeholder (because the "*" is essentially
the placeholder as far as the "int" is concerned).

This was originally committed in 277623f4d5

Reverted in f9ad1d1c77 due to breakages
outside of clang - lldb seems to have some strange/strong dependence on
"char [N]" versus "char[N]" when printing strings (not due to that name
appearing in DWARF, but probably due to using clang to stringify type
names) that'll need to be addressed, plus a few other odds and ends in
other subprojects (clang-tools-extra, compiler-rt, etc).
2021-10-21 11:34:43 -07:00

31 lines
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C++

// RUN: %clang_cc1 -triple powerpc-ibm-aix-xcoff -Wpacked \
// RUN: -fdump-record-layouts -fsyntax-only -verify -x c++ < %s | \
// RUN: FileCheck %s
// RUN: %clang_cc1 -triple powerpc64-ibm-aix-xcoff -Wpacked \
// RUN: -fdump-record-layouts -fsyntax-only -verify -x c++ < %s | \
// RUN: FileCheck %s
struct A {
double d;
};
struct B {
char x[8];
};
struct [[gnu::packed]] C : B, A { // expected-warning{{packed attribute is unnecessary for 'C'}}
char x alignas(4)[8];
};
int b = sizeof(C);
// CHECK: 0 | struct C
// CHECK-NEXT: 0 | struct B (base)
// CHECK-NEXT: 0 | char[8] x
// CHECK-NEXT: 8 | struct A (base)
// CHECK-NEXT: 8 | double d
// CHECK-NEXT: 16 | char[8] x
// CHECK-NEXT: | [sizeof=24, dsize=24, align=4, preferredalign=4,
// CHECK-NEXT: | nvsize=24, nvalign=4, preferrednvalign=4]