diff options
| author | Joseph Myers <joseph@codesourcery.com> | 2020-10-28 18:57:02 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2020-10-28 18:58:43 +0000 |
| commit | a4223abb3deb24e8104bbfec6f0f21579c1889e3 (patch) | |
| tree | a9faf863b7f5795bb9f45e505fe7eaa342d435ec /gcc/c/c-decl.c | |
| parent | a0e4d7b44c544c84cffc7ff9c64b6f1af14fb08d (diff) | |
| download | gcc-a4223abb3deb24e8104bbfec6f0f21579c1889e3.zip gcc-a4223abb3deb24e8104bbfec6f0f21579c1889e3.tar.gz gcc-a4223abb3deb24e8104bbfec6f0f21579c1889e3.tar.bz2 | |
c: Allow omitted parameter names for C2x
C2x allows parameter names to be omitted in function definitions, as
in C++; add support for this feature. As with other features that
only result in previously rejected code being accepted, this feature
is now accepted as an extension for previous standard versions, with a
pedwarn-if-pedantic that is disabled by -Wno-c11-c2x-compat. The
logic for avoiding unused-parameter warnings for unnamed parameters is
in code shared between C and C++, so no changes are needed there.
Bootstrapped with no regressions for x86_64-pc-linux-gnu.
gcc/c/
2020-10-28 Joseph Myers <joseph@codesourcery.com>
* c-decl.c (store_parm_decls_newstyle): Use pedwarn_c11 not
error_at for omitted parameter name.
gcc/testsuite/
2020-10-28 Joseph Myers <joseph@codesourcery.com>
* gcc.dg/c11-parm-omit-1.c, gcc.dg/c11-parm-omit-2.c,
gcc.dg/c11-parm-omit-3.c, gcc.dg/c11-parm-omit-4.c,
gcc.dg/c2x-parm-omit-1.c, gcc.dg/c2x-parm-omit-2.c,
gcc.dg/c2x-parm-omit-3.c, gcc.dg/c2x-parm-omit-4.c: New tests.
* gcc.dg/noncompile/pr79758.c: Do not expect error for omitted
parameter name.
Diffstat (limited to 'gcc/c/c-decl.c')
| -rw-r--r-- | gcc/c/c-decl.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c index 1673b95..a5d0b15 100644 --- a/gcc/c/c-decl.c +++ b/gcc/c/c-decl.c @@ -9630,7 +9630,9 @@ store_parm_decls_newstyle (tree fndecl, const struct c_arg_info *arg_info) warn_if_shadowing (decl); } else - error_at (DECL_SOURCE_LOCATION (decl), "parameter name omitted"); + pedwarn_c11 (DECL_SOURCE_LOCATION (decl), OPT_Wpedantic, + "ISO C does not support omitting parameter names in " + "function definitions before C2X"); } /* Record the parameter list in the function declaration. */ |