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9fb5348e30
Now that C23 support is essentially feature-complete, I'd like to switch the default language version for C compilation to -std=gnu23. This requires updating a large number of testcases that fail with the new language version if left unchanged. In this patch, update most of the tests for which there is a safe change that works both before and after the update to default language version - typically adding the option -std=gnu17 or -Wno-old-style-definition to the tests. (There are also a few tests where I'd like to investigate further why they fail with -std=gnu23, or where I think such failures show an actual bug to fix before changing the default language version, or where it seems more appropriate to make a testcase change that would result in failures in the absence of the language version change rather than just adding an option that does nothing with the gnu17 default.) The libffi test fixes have also been submitted upstream: <https://github.com/libffi/libffi/pull/861>. Most of the failures requiring such changes are for one of two reasons: * Unprototyped function declarations with () (meaning the same as (void) in C23 mode) for a function then called with arguments. * Old-style function definitions, which warn by default in C23 mode, so resulting in test failures for the unexpected warnings. Other reasons for failures include: * Tests with their own definitions of bool, true and false. * Tests of diagnostics (often with -pedantic) in cases where C23 has changed semantics, such as: - tag compatibility for structs; - enum values out of range of int; - handing of qualified array types; - decimal floating types formerly needing -pedantic diagnostics, but being standard in C23. Bootstrapped with no regressions for x86_64-pc-linux-gnu. gcc/testsuite/ * c-c++-common/Wcast-function-type.c: Add -std=gnu17 for C. * c-c++-common/Wformat-pr84258.c: Add -std=gnu17 for C. * c-c++-common/Wvarargs.c: Add -std=gnu17 for C. * c-c++-common/analyzer/data-model-12.c: Add -std=gnu17 for C. * c-c++-common/builtins.c: Add -std=gnu17 for C. * c-c++-common/pointer-to-fn1.c: Add -std=gnu17 for C. * c-c++-common/pragma-diag-17.c: Add -std=gnu17 for C. * c-c++-common/sizeof-array-argument.c: Add -Wno-old-style-definition for C. * g++.dg/lto/pr54625-1_0.c: Add -std=gnu17. * g++.dg/lto/pr54625-2_0.c: Add -std=gnu17. * gcc.c-torture/compile/20040214-2.c: Add -std=gnu17. * gcc.c-torture/compile/921011-2.c: Add -std=gnu17. * gcc.c-torture/compile/931102-1.c: Add -std=gnu17. * gcc.c-torture/compile/990801-1.c: Add -std=gnu17. * gcc.c-torture/compile/nested-1.c: Add -std=gnu17. * gcc.c-torture/compile/pr100241-1.c: Add -std=gnu17. * gcc.c-torture/compile/pr106101.c: Add -std=gnu17. * gcc.c-torture/compile/pr113616.c: Add -std=gnu17. * gcc.c-torture/compile/pr47967.c: Add -std=gnu17. * gcc.c-torture/compile/pr51694.c: Add -std=gnu17. * gcc.c-torture/compile/pr71109.c: Add -std=gnu17. * gcc.c-torture/compile/pr83051-2.c: Add -std=gnu17. * gcc.c-torture/compile/pr89663-1.c: Add -std=gnu17. * gcc.c-torture/compile/pr94238.c: Add -std=gnu17. * gcc.c-torture/compile/pr96796.c: Add -std=gnu17. * gcc.c-torture/compile/pr97576.c: Add -std=gnu17. * gcc.c-torture/compile/udivmod4.c: Add -std=gnu17. * gcc.c-torture/execute/20010605-2.c: Add -std=gnu17. * gcc.c-torture/execute/20020404-1.c: Add -std=gnu17. * gcc.c-torture/execute/20030714-1.c: Add -std=gnu17. * gcc.c-torture/execute/20051012-1.c: Add -std=gnu17. * gcc.c-torture/execute/20190820-1.c: Add -std=gnu17. * gcc.c-torture/execute/920612-1.c: Add -Wno-old-style-definition. * gcc.c-torture/execute/930608-1.c: Add -std=gnu17. * gcc.c-torture/execute/comp-goto-1.c: Add -std=gnu17. * gcc.c-torture/execute/ieee/fp-cmp-1.x: Add -std=gnu17. * gcc.c-torture/execute/ieee/fp-cmp-2.x: Add -std=gnu17. * gcc.c-torture/execute/ieee/fp-cmp-3.x: Add -std=gnu17. * gcc.c-torture/execute/ieee/fp-cmp-4.x: New file. * gcc.c-torture/execute/ieee/fp-cmp-4f.x: New file. * gcc.c-torture/execute/ieee/fp-cmp-4l.x: New file. * gcc.c-torture/execute/loop-9.c: Add -std=gnu17. * gcc.c-torture/execute/pr103209.c: Add -std=gnu17. * gcc.c-torture/execute/pr28289.c: Add -std=gnu17. * gcc.c-torture/execute/pr34982.c: Add -std=gnu17. * gcc.c-torture/execute/pr67037.c: Add -std=gnu17. * gcc.c-torture/execute/va-arg-2.c: Add -std=gnu17. * gcc.dg/20010202-1.c: Add -std=gnu17. * gcc.dg/20020430-1.c: Add -std=gnu17. * gcc.dg/20031218-3.c: Add -std=gnu17. * gcc.dg/20040127-1.c: Add -std=gnu17. * gcc.dg/20041014-1.c: Add -Wno-old-style-definition. * gcc.dg/20041122-1.c: Add -std=gnu17. * gcc.dg/20050309-1.c: Add -std=gnu17. * gcc.dg/20061026.c: Add -std=gnu17. * gcc.dg/20101010-1.c: Add -std=gnu17. * gcc.dg/Warray-parameter-10.c: Add -std=gnu17. * gcc.dg/Wbuiltin-declaration-mismatch-2.c: Add -std=gnu17. * gcc.dg/Wbuiltin-declaration-mismatch-3.c: Add -std=gnu17. * gcc.dg/Wbuiltin-declaration-mismatch-4.c: Add -std=gnu17. * gcc.dg/Wbuiltin-declaration-mismatch-5.c: Add -std=gnu17. * gcc.dg/Wbuiltin-declaration-mismatch.c: Add -std=gnu17. * gcc.dg/Wcxx-compat-2.c: Add -std=gnu17. * gcc.dg/Wdouble-promotion.c: Add -std=gnu17. * gcc.dg/Wfree-nonheap-object-7.c: Add -std=gnu17. * gcc.dg/Wimplicit-int-1.c: Add -std=gnu17. * gcc.dg/Wimplicit-int-1a.c: Add -std=gnu17. * gcc.dg/Wimplicit-int-2.c: Add -std=gnu17. * gcc.dg/Wimplicit-int-3.c: Add -std=gnu17. * gcc.dg/Wimplicit-int-4.c: Add -std=gnu17. * gcc.dg/Wimplicit-int-4a.c: Add -std=gnu17. * gcc.dg/Wincompatible-pointer-types-1.c: Add -std=gnu17. * gcc.dg/Wrestrict-19.c: Add -std=gnu17. * gcc.dg/Wrestrict-4.c: Add -std=gnu17. * gcc.dg/Wrestrict-5.c: Add -std=gnu17. * gcc.dg/Wstrict-overflow-20.c: Add -std=gnu17. * gcc.dg/Wstringop-overflow-13.c: Add -std=gnu17. * gcc.dg/analyzer/doom-d_main-IdentifyVersion.c: Add -std=gnu17. * gcc.dg/analyzer/doom-s_sound-pr108867.c: Add -std=gnu17. * gcc.dg/analyzer/pr93032-mztools-signed-char.c: Add -Wno-old-style-definition. * gcc.dg/analyzer/pr93032-mztools-unsigned-char.c: Add -Wno-old-style-definition. * gcc.dg/analyzer/pr93355-localealias.c: Add -Wno-old-style-definition. * gcc.dg/analyzer/pr93375.c: Add -std=gnu17. * gcc.dg/analyzer/pr94688.c: Add -std=gnu17. * gcc.dg/analyzer/sensitive-1.c: Add -std=gnu17. * gcc.dg/analyzer/torture/asm-x86-linux-wfx_get_ps_timeout-full.c: Add -std=gnu17. * gcc.dg/analyzer/torture/pr104863.c: Add -std=gnu17. * gcc.dg/analyzer/torture/pr93379.c: Add -std=gnu17. * gcc.dg/array-quals-2.c: Add -std=gnu17. * gcc.dg/attr-invalid.c: Add -Wno-old-style-definition. * gcc.dg/auto-init-uninit-A.c: Add -Wno-old-style-definition. * gcc.dg/builtin-choose-expr.c: Declare exit with (int) prototype. * gcc.dg/builtin-tgmath-err-1.c: Add -std=gnu17. * gcc.dg/builtins-30.c: Add -std=gnu17. * gcc.dg/cast-function-1.c: Add -std=gnu17. * gcc.dg/cleanup-1.c: Add -std=gnu17. * gcc.dg/compat/struct-complex-1_x.c: Add -std=gnu17. * gcc.dg/compat/struct-complex-2_x.c: Add -std=gnu17. * gcc.dg/compat/union-m128-1_x.c: Add -std=gnu17. * gcc.dg/debug/dwarf2/pr66482.c: Add -std=gnu17. * gcc.dg/dfp/composite-type-2.c: Add -std=gnu17. * gcc.dg/dfp/composite-type.c: Add -std=gnu17. * gcc.dg/dfp/keywords-pedantic.c: Add -std=gnu17. * gcc.dg/dremf-type-compat-1.c: Add -std=gnu17. * gcc.dg/dremf-type-compat-2.c: Add -std=gnu17. * gcc.dg/dremf-type-compat-3.c: Add -std=gnu17. * gcc.dg/dremf-type-compat-4.c: Add -std=gnu17. * gcc.dg/enum-compat-1.c: Add -std=gnu17. * gcc.dg/enum-compat-2.c: Add -std=gnu17. * gcc.dg/floatn-errs.c: Add -std=gnu17. * gcc.dg/fltconst-pedantic-dfp.c: Add -std=gnu17. * gcc.dg/format/proto.c: Add -std=gnu17. * gcc.dg/format/sentinel-1.c: Add -std=gnu17. * gcc.dg/gomp/declare-simd-1.c: Add -Wno-old-style-definition. * gcc.dg/ifelse-1.c: Add -Wno-old-style-definition. * gcc.dg/inline-33.c: Add -std=gnu17. * gcc.dg/ipa/inline-5.c: Add -std=gnu17. * gcc.dg/ipa/ipa-sra-21.c: Add -std=gnu17. * gcc.dg/ipa/pr102714.c: Add -std=gnu17. * gcc.dg/ipa/pr104813.c: Add -std=gnu17. * gcc.dg/ipa/pr108679.c: Add -std=gnu17. * gcc.dg/ipa/pr42706.c: Add -std=gnu17. * gcc.dg/ipa/pr88214.c: Add -Wno-old-style-definition. * gcc.dg/ipa/pr91853.c: Add -Wno-old-style-definition. * gcc.dg/ipa/pr93763.c: Add -std=gnu17. * gcc.dg/ipa/pr96482-2.c: Add -std=gnu17. * gcc.dg/lto/20091013-1_2.c: Add -std=gnu17. * gcc.dg/lto/20091015-1_2.c: Add -std=gnu17. * gcc.dg/lto/pr113197_1.c: Add -std=gnu17. * gcc.dg/lto/pr54702_1.c: Add -std=gnu17. * gcc.dg/lto/pr99849_0.c: Add -std=gnu17. * gcc.dg/noncompile/920923-1.c: Add -std=gnu17. * gcc.dg/noncompile/old-style-parm-1.c: Add -Wno-old-style-definition. * gcc.dg/noncompile/old-style-parm-3.c: Add -Wno-old-style-definition. * gcc.dg/noncompile/pr30552-2.c: Add -Wno-old-style-definition. * gcc.dg/noncompile/pr30552-3.c: Add -std=gnu17. * gcc.dg/noncompile/pr71265.c: Add -Wno-old-style-definition. * gcc.dg/noncompile/pr79758-2.c: Add -Wno-old-style-definition. * gcc.dg/noncompile/pr79758.c: Add -Wno-old-style-definition. * gcc.dg/noncompile/va-arg-1.c: Add -std=gnu17. * gcc.dg/old-style-prom-1.c: Add -std=gnu17. * gcc.dg/old-style-prom-2.c: Add -std=gnu17. * gcc.dg/old-style-prom-3.c: Add -std=gnu17. * gcc.dg/old-style-then-proto-1.c: Add -std=gnu17. * gcc.dg/parm-incomplete-1.c: Add -std=gnu17. * gcc.dg/parm-mismatch-1.c: Add -std=gnu17. * gcc.dg/permerror-default.c: Add -std=gnu17. * gcc.dg/permerror-fpermissive-nowarning.c: Add -std=gnu17. * gcc.dg/permerror-fpermissive.c: Add -std=gnu17. * gcc.dg/permerror-noerror.c: Add -std=gnu17. * gcc.dg/permerror-nowarning.c: Add -std=gnu17. * gcc.dg/permerror-pedantic.c: Add -std=gnu17. * gcc.dg/plugin/infoleak-net-ethtool-ioctl.c: Add -std=gnu17. * gcc.dg/pointer-array-quals-1.c: Add -std=gnu17. * gcc.dg/pointer-array-quals-2.c: Add -std=gnu17. * gcc.dg/pr100791.c: Add -std=gnu17. * gcc.dg/pr100843.c: Add -std=gnu17. * gcc.dg/pr102273.c: Add -std=gnu17. * gcc.dg/pr102385.c: Add -std=gnu17. * gcc.dg/pr103222.c: Add -std=gnu17. * gcc.dg/pr105140.c: Add -std=gnu17. * gcc.dg/pr105150.c: Add -std=gnu17. * gcc.dg/pr105250.c: Add -std=gnu17. * gcc.dg/pr105972.c: Add -Wno-old-style-definition. * gcc.dg/pr111039.c: Add -std=gnu17. * gcc.dg/pr111407.c: Add -std=gnu17. * gcc.dg/pr111922.c: Add -Wno-old-style-definition. * gcc.dg/pr15236.c: Add -std=gnu17. * gcc.dg/pr17188-1.c: Add -std=gnu17. * gcc.dg/pr20368-1.c: Add -std=gnu17. * gcc.dg/pr20368-2.c: Add -std=gnu17. * gcc.dg/pr20368-3.c: Add -std=gnu17. * gcc.dg/pr27331.c: Add -Wno-old-style-definition. * gcc.dg/pr27861-1.c: Add -std=gnu17. * gcc.dg/pr28121.c: Add -std=gnu17. * gcc.dg/pr28243.c: Add -std=gnu17. * gcc.dg/pr28888.c: Add -std=gnu17. * gcc.dg/pr29254.c: Add -std=gnu17. * gcc.dg/pr34457-1.c: Add -std=gnu17. * gcc.dg/pr36015.c: Add -std=gnu17. * gcc.dg/pr38245-3.c: Add -std=gnu17. * gcc.dg/pr38245-4.c: Add -std=gnu17. * gcc.dg/pr41241.c: Add -std=gnu17. * gcc.dg/pr43058.c: Add -std=gnu17. * gcc.dg/pr44539.c: Add -std=gnu17. * gcc.dg/pr45055.c: Add -std=gnu17. * gcc.dg/pr50908.c: Add -Wno-old-style-definition. * gcc.dg/pr60647-1.c: Add -Wno-old-style-definition. * gcc.dg/pr63762.c: Add -std=gnu17. * gcc.dg/pr63804.c: Add -std=gnu17. * gcc.dg/pr68306-3.c: Add -std=gnu17. * gcc.dg/pr68533.c: Add -std=gnu17. * gcc.dg/pr69156.c: Add -std=gnu17. * gcc.dg/pr7356-2.c: Add -Wno-old-style-definition. * gcc.dg/pr79983.c: Add -std=gnu17. * gcc.dg/pr83463.c: Add -std=gnu17. * gcc.dg/pr87347.c: Add -std=gnu17. * gcc.dg/pr89521-1.c: Add -std=gnu17. * gcc.dg/pr89521-2.c: Add -std=gnu17. * gcc.dg/pr90648.c: Add -std=gnu17. * gcc.dg/pr93573-1.c: Add -std=gnu17. * gcc.dg/pr94167.c: Add -std=gnu17. * gcc.dg/pr94705.c: Add -std=gnu17. * gcc.dg/pr95118.c: Add -std=gnu17. * gcc.dg/pr96335.c: Add -std=gnu17. * gcc.dg/pr97830.c: Add -std=gnu17. * gcc.dg/pr97882.c: Add -std=gnu17. * gcc.dg/pr99122-2.c: Add -std=gnu17. * gcc.dg/pr99122-3.c: Add -std=gnu17. * gcc.dg/qual-component-1.c: Add -std=gnu17. * gcc.dg/sibcall-6.c: Add -Wno-old-style-definition. * gcc.dg/sms-2.c: Add -Wno-old-style-definition. * gcc.dg/tm/20091221.c: Add -std=gnu17. * gcc.dg/torture/bfloat16-basic.c: Add -Wno-old-style-definition. * gcc.dg/torture/float128-basic.c: Add -Wno-old-style-definition. * gcc.dg/torture/float128x-basic.c: Add -Wno-old-style-definition. * gcc.dg/torture/float16-basic.c: Add -Wno-old-style-definition. * gcc.dg/torture/float32-basic.c: Add -Wno-old-style-definition. * gcc.dg/torture/float32x-basic.c: Add -Wno-old-style-definition. * gcc.dg/torture/float64-basic.c: Add -Wno-old-style-definition. * gcc.dg/torture/float64x-basic.c: Add -Wno-old-style-definition. * gcc.dg/torture/pr102762.c: Add -std=gnu17. * gcc.dg/torture/pr103987.c: Add -std=gnu17. * gcc.dg/torture/pr104825.c: Add -Wno-old-style-definition. * gcc.dg/torture/pr105166.c: Add -std=gnu17. * gcc.dg/torture/pr105185.c: Add -Wno-old-style-definition. * gcc.dg/torture/pr109652.c: Add -std=gnu17. * gcc.dg/torture/pr112444.c: Add -std=gnu17. * gcc.dg/torture/pr113895-3.c: Add -std=gnu17. * gcc.dg/torture/pr24626-2.c: Add -std=gnu17. * gcc.dg/torture/pr25183.c: Add -std=gnu17. * gcc.dg/torture/pr38948.c: Add -std=gnu17. * gcc.dg/torture/pr44807.c: Add -std=gnu17. * gcc.dg/torture/pr47281.c: Add -std=gnu17. * gcc.dg/torture/pr47958-1.c: Add -Wno-old-style-definition. * gcc.dg/torture/pr48063.c: Add -std=gnu17. * gcc.dg/torture/pr57036-1.c: Add -std=gnu17. * gcc.dg/torture/pr57330.c: Add -std=gnu17. * gcc.dg/torture/pr57584.c: Add -std=gnu17. * gcc.dg/torture/pr67741.c: Add -std=gnu17. * gcc.dg/torture/pr68104.c: Add -std=gnu17. * gcc.dg/torture/pr69242.c: Add -std=gnu17. * gcc.dg/torture/pr70457.c: Add -std=gnu17. * gcc.dg/torture/pr70985.c: Add -std=gnu17. * gcc.dg/torture/pr71606.c: Add -std=gnu17. * gcc.dg/torture/pr71816.c: Add -std=gnu17. * gcc.dg/torture/pr77286.c: Add -std=gnu17. * gcc.dg/torture/pr77646.c: Add -std=gnu17. * gcc.dg/torture/pr77677-2.c: Add -std=gnu17. * gcc.dg/torture/pr78365.c: Add -Wno-old-style-definition. * gcc.dg/torture/pr79732.c: Add -std=gnu17. * gcc.dg/torture/pr80612.c: Add -std=gnu17. * gcc.dg/torture/pr80764.c: Add -std=gnu17. * gcc.dg/torture/pr80842.c: Add -std=gnu17. * gcc.dg/torture/pr81900.c: Add -std=gnu17. * gcc.dg/torture/pr82276.c: Add -std=gnu17. * gcc.dg/torture/pr84803.c: Add -std=gnu17. * gcc.dg/torture/pr93124.c: Add -std=gnu17. * gcc.dg/torture/pr97330-1.c: Add -Wno-old-style-definition. * gcc.dg/tree-prof/comp-goto-1.c: Add -std=gnu17. * gcc.dg/tree-ssa/20030703-2.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030708-1.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030709-2.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030709-3.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030710-1.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030711-1.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030711-2.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030711-3.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030714-1.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030714-2.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030728-1.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030807-10.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030807-11.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030807-3.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030807-6.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030807-7.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030814-4.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030814-5.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030814-6.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20030918-1.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/20040514-2.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/loadpre7.c: Add -Wno-old-style-definition. * gcc.dg/tree-ssa/pr111003.c: Add -std=gnu17. * gcc.dg/tree-ssa/pr115128.c: Add -std=gnu17. * gcc.dg/tree-ssa/pr115191.c: Add -std=gnu17. * gcc.dg/tree-ssa/pr24840.c: Add -std=gnu17. * gcc.dg/tree-ssa/pr69666.c: Add -std=gnu17. * gcc.dg/tree-ssa/pr70232.c: Add -std=gnu17. * gcc.dg/ubsan/pr79757-1.c: Add -Wno-old-style-definition. * gcc.dg/ubsan/pr79757-2.c: Add -Wno-old-style-definition. * gcc.dg/ubsan/pr79757-3.c: Add -Wno-old-style-definition. * gcc.dg/ubsan/pr81223.c: Add -std=gnu17. * gcc.dg/uninit-10-O0.c: Add -Wno-old-style-definition. * gcc.dg/uninit-10.c: Add -Wno-old-style-definition. * gcc.dg/uninit-32.c: Add -std=gnu17. * gcc.dg/uninit-41.c: Add -std=gnu17. * gcc.dg/uninit-A-O0.c: Add -Wno-old-style-definition. * gcc.dg/uninit-A.c: Add -Wno-old-style-definition. * gcc.dg/unused-1.c: Add -Wno-old-style-definition. * gcc.dg/vect/bb-slp-pr114249.c: Add -std=gnu17. * gcc.dg/vect/bb-slp-pr97486.c: Add -std=gnu17. * gcc.dg/vect/bb-slp-subgroups-1.c: Add -std=gnu17. * gcc.dg/vect/bb-slp-subgroups-2.c: Add -std=gnu17. * gcc.dg/vect/bb-slp-subgroups-3.c: Add -std=gnu17. * gcc.dg/vect/vect-early-break_111-pr113731.c: Add -std=gnu17. * gcc.dg/vect/vect-early-break_122-pr114239.c: Add -std=gnu17. * gcc.dg/vect/vect-multi-peel-gaps.c: Add -std=gnu17. * gcc.dg/vla-stexp-2.c: Add -std=gnu17. * gcc.dg/warn-1.c: Add -Wno-old-style-definition. * gcc.dg/winline-10.c: Add -Wno-old-style-definition. * gcc.dg/wtr-label-1.c: Add -Wno-old-style-definition. * gcc.dg/wtr-switch-1.c: Add -Wno-old-style-definition. * gcc.target/i386/excess-precision-3.c: Add -Wno-old-style-definition. * gcc.target/i386/fma4-256-nmsubXX.c: Add -std=gnu17. * gcc.target/i386/fma4-nmsubXX.c: Add -std=gnu17. * gcc.target/i386/nop-mcount.c: Add -Wno-old-style-definition. * gcc.target/i386/pr102627.c: Add -std=gnu17. * gcc.target/i386/pr106994.c: Add -std=gnu17. * gcc.target/i386/pr68349.c: Add -std=gnu17. * gcc.target/i386/pr97313.c: Add -std=gnu17. * gcc.target/i386/pr99454.c: Add -std=gnu17. * gcc.target/i386/record-mcount.c: Add -Wno-old-style-definition. libffi/ * testsuite/libffi.call/va_struct2.c (test_fn): Cast n to void. * testsuite/libffi.call/va_struct3.c (test_fn): Likewise. Backported from <https://github.com/libffi/libffi/pull/861>.
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