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| author | Martin Sebor <msebor@redhat.com> | 2018-11-09 17:32:52 +0000 |
|---|---|---|
| committer | Martin Sebor <msebor@gcc.gnu.org> | 2018-11-09 10:32:52 -0700 |
| commit | 79a2c4281c7dcaa6a138d24fd037c62453a12bde (patch) | |
| tree | dff179677c863457f73ef49310ef719591c305e7 /libgomp/libgomp.h | |
| parent | 900dab1338b45c8fa8d1b315dce53712b857da1d (diff) | |
| download | gcc-79a2c4281c7dcaa6a138d24fd037c62453a12bde.tar.gz | |
PR middle-end/81824 - Warn for missing attributes with function aliases
gcc/c-family/ChangeLog:
PR middle-end/81824
* c-attribs.c (handle_copy_attribute): New function.
gcc/cp/ChangeLog:
PR middle-end/81824
* pt.c (warn_spec_missing_attributes): Move code to attribs.c.
Call decls_mismatched_attributes.
gcc/ChangeLog:
PR middle-end/81824
* attribs.c (has_attribute): New helper function.
(decls_mismatched_attributes, maybe_diag_alias_attributes): Same.
* attribs.h (decls_mismatched_attributes): Declare.
* cgraphunit.c (handle_alias_pairs): Call maybe_diag_alias_attributes.
(maybe_diag_incompatible_alias): Use OPT_Wattribute_alias_.
* common.opt (-Wattribute-alias): Take an argument.
(-Wno-attribute-alias): New option.
* doc/extend.texi (Common Function Attributes): Document copy.
(Common Variable Attributes): Same.
* doc/invoke.texi (-Wmissing-attributes): Document enhancement.
(-Wattribute-alias): Document new option argument.
gcc/testsuite/ChangeLog:
PR middle-end/81824
* gcc.dg/Wattribute-alias.c: New test.
* gcc.dg/Wmissing-attributes.c: New test.
* gcc.dg/attr-copy.c: New test.
* gcc.dg/attr-copy-2.c: New test.
* gcc.dg/attr-copy-3.c: New test.
* gcc.dg/attr-copy-4.c: New test.
From-SVN: r265980
Diffstat (limited to 'libgomp/libgomp.h')
| -rw-r--r-- | libgomp/libgomp.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/libgomp/libgomp.h b/libgomp/libgomp.h index 828e9b0095b..7eacb45db66 100644 --- a/libgomp/libgomp.h +++ b/libgomp/libgomp.h @@ -1149,16 +1149,26 @@ extern int gomp_test_nest_lock_25 (omp_nest_lock_25_t *) __GOMP_NOTHROW; # define attribute_hidden #endif +#if __GNUC__ >= 9 +# define HAVE_ATTRIBUTE_COPY +#endif + +#ifdef HAVE_ATTRIBUTE_COPY +# define attribute_copy(arg) __attribute__ ((copy (arg))) +#else +# define attribute_copy(arg) +#endif + #ifdef HAVE_ATTRIBUTE_ALIAS # define strong_alias(fn, al) \ - extern __typeof (fn) al __attribute__ ((alias (#fn))); + extern __typeof (fn) al __attribute__ ((alias (#fn))) attribute_copy (fn); # define ialias_ulp ialias_str1(__USER_LABEL_PREFIX__) # define ialias_str1(x) ialias_str2(x) # define ialias_str2(x) #x # define ialias(fn) \ extern __typeof (fn) gomp_ialias_##fn \ - __attribute__ ((alias (#fn))) attribute_hidden; + __attribute__ ((alias (#fn))) attribute_hidden attribute_copy (fn); # define ialias_redirect(fn) \ extern __typeof (fn) fn __asm__ (ialias_ulp "gomp_ialias_" #fn) attribute_hidden; # define ialias_call(fn) gomp_ialias_ ## fn |