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from 16edb1bf6b5 PR c/83656 - missing -Wbuiltin-declaration-mismatch on decl [...] new 249e7a17be9 PR c++/87541 - ICE using a constant decl as an attribute al [...]

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Summary of changes: gcc/ChangeLog | 9 + gcc/c-family/ChangeLog | 17 + gcc/c-family/c-attribs.c | 360 ++++++++++++++++----- gcc/c-family/c-common.c | 3 +- gcc/c-family/c-common.h | 15 +- gcc/c-family/c-format.c | 88 ++--- gcc/doc/extend.texi | 80 +++-- gcc/testsuite/ChangeLog | 20 ++ gcc/testsuite/c-c++-common/attributes-1.c | 19 +- gcc/testsuite/c-c++-common/pr71574.c | 15 +- gcc/testsuite/g++.dg/ext/attr-alloc_size.C | 53 +++ gcc/testsuite/gcc.dg/attr-alloc_align-2.c | 6 +- gcc/testsuite/gcc.dg/attr-alloc_align-4.c | 43 +++ gcc/testsuite/gcc.dg/attr-alloc_size-12.c | 60 ++++ gcc/testsuite/gcc.dg/attr-alloc_size-2.c | 7 +- gcc/testsuite/gcc.dg/attr-alloc_size.c | 6 +- gcc/testsuite/gcc.dg/attr-assume_aligned-4.c | 36 +++ gcc/testsuite/gcc.dg/format/attr-3.c | 12 +- gcc/testsuite/gcc.dg/nonnull-2.c | 7 +- gcc/testsuite/gcc.dg/torture/pr80612.c | 2 + .../obj-c++.dg/attributes/method-format-1.mm | 4 +- .../obj-c++.dg/attributes/method-nonnull-1.mm | 14 +- gcc/testsuite/objc.dg/attributes/method-format-1.m | 4 +- .../objc.dg/attributes/method-nonnull-1.m | 16 +- gcc/tree.c | 42 ++- gcc/tree.h | 1 + 26 files changed, 730 insertions(+), 209 deletions(-) create mode 100644 gcc/testsuite/g++.dg/ext/attr-alloc_size.C create mode 100644 gcc/testsuite/gcc.dg/attr-alloc_align-4.c create mode 100644 gcc/testsuite/gcc.dg/attr-alloc_size-12.c create mode 100644 gcc/testsuite/gcc.dg/attr-assume_aligned-4.c