diff options
Diffstat (limited to 'gcc/c')
| -rw-r--r-- | gcc/c/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/c/c-decl.c | 7 |
2 files changed, 11 insertions, 2 deletions
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog index bcb282c..4ed5b4b 100644 --- a/gcc/c/ChangeLog +++ b/gcc/c/ChangeLog @@ -1,3 +1,9 @@ +2018-11-29 Martin Sebor <msebor@redhat.com> + + PR c/88172 + PR testsuite/88208 + * c-decl.c (declspec_add_alignas): Adjust call to check_user_alignment. + 2018-11-23 Martin Sebor <msebor@redhat.com> PR testsuite/88098 diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c index cdd10ab..b50f2bf 100644 --- a/gcc/c/c-decl.c +++ b/gcc/c/c-decl.c @@ -11061,12 +11061,15 @@ struct c_declspecs * declspecs_add_alignas (location_t loc, struct c_declspecs *specs, tree align) { - int align_log; specs->alignas_p = true; specs->locations[cdw_alignas] = loc; if (align == error_mark_node) return specs; - align_log = check_user_alignment (align, false, true); + + /* Only accept the alignment if it's valid and greater than + the current one. Zero is invalid but by C11 required to + be silently ignored. */ + int align_log = check_user_alignment (align, false, /* warn_zero = */false); if (align_log > specs->align_log) specs->align_log = align_log; return specs; |