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from 1b3bff737b2 middle-end: rework vectorizable_store to iterate over singl [...] new 0547dbb725b expr, c: Don't clear whole unions [PR116416] new fd62fdc5e1b c++: Small initial fixes for zeroing of padding bits [PR117256]

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Summary of changes: gcc/c/c-parser.cc | 7 + gcc/c/c-typeck.cc | 14 ++ gcc/common.opt | 16 +++ gcc/cp/constexpr.cc | 10 +- gcc/cp/init.cc | 5 +- gcc/doc/invoke.texi | 40 +++++- gcc/expr.cc | 51 ++++++-- gcc/flag-types.h | 7 + gcc/gimple-fold.cc | 18 ++- gcc/testsuite/g++.dg/cpp0x/zero-init1.C | 70 ++++++++++ gcc/testsuite/gcc.dg/c23-empty-init-5.c | 207 ++++++++++++++++++++++++++++++ gcc/testsuite/gcc.dg/gnu11-empty-init-1.c | 199 ++++++++++++++++++++++++++++ gcc/testsuite/gcc.dg/gnu11-empty-init-2.c | 5 + gcc/testsuite/gcc.dg/gnu11-empty-init-3.c | 204 +++++++++++++++++++++++++++++ gcc/testsuite/gcc.dg/gnu11-empty-init-4.c | 187 +++++++++++++++++++++++++++ gcc/testsuite/gcc.dg/plugin/infoleak-1.c | 14 +- gcc/tree.h | 3 + 17 files changed, 1038 insertions(+), 19 deletions(-) create mode 100644 gcc/testsuite/g++.dg/cpp0x/zero-init1.C create mode 100644 gcc/testsuite/gcc.dg/c23-empty-init-5.c create mode 100644 gcc/testsuite/gcc.dg/gnu11-empty-init-1.c create mode 100644 gcc/testsuite/gcc.dg/gnu11-empty-init-2.c create mode 100644 gcc/testsuite/gcc.dg/gnu11-empty-init-3.c create mode 100644 gcc/testsuite/gcc.dg/gnu11-empty-init-4.c