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| author | Tom Tromey <tom@tromey.com> | 2018-04-20 13:40:29 -0600 |
|---|---|---|
| committer | Tom Tromey <tom@tromey.com> | 2018-04-30 11:25:31 -0600 |
| commit | 007e1530347330d4dbba387c4e35aae05bc06498 (patch) | |
| tree | 7d25c515868a29c6867661128c2ce6ead1d7d890 /gdb/c-exp.y | |
| parent | 2b4424c35b9ebabaab8588b2ba6c38935a48efec (diff) | |
| download | gdb-007e1530347330d4dbba387c4e35aae05bc06498.zip gdb-007e1530347330d4dbba387c4e35aae05bc06498.tar.gz gdb-007e1530347330d4dbba387c4e35aae05bc06498.tar.bz2 | |
Handle alignof and _Alignof
This adds alignof and _Alignof to the C/C++ expression parser, and
adds new tests to test the features. The tests are written to try to
ensure that gdb's knowledge of alignment rules stays in sync with the
compiler's.
2018-04-30 Tom Tromey <tom@tromey.com>
PR exp/17095:
* NEWS: Update.
* std-operator.def (UNOP_ALIGNOF): New operator.
* expprint.c (dump_subexp_body_standard) <case UNOP_ALIGNOF>:
New.
* eval.c (evaluate_subexp_standard) <case UNOP_ALIGNOF>: New.
* c-lang.c (c_op_print_tab): Add alignof.
* c-exp.y (ALIGNOF): New token.
(exp): Add "ALIGNOF" production.
(ident_tokens): Add _Alignof and alignof.
2018-04-30 Tom Tromey <tom@tromey.com>
PR exp/17095:
* gdb.dwarf2/dw2-align.exp: New file.
* gdb.cp/align.exp: New file.
* gdb.base/align.exp: New file.
* lib/gdb.exp (gdb_int128_helper): New proc.
(has_int128_c, has_int128_cxx): New caching procs.
Diffstat (limited to 'gdb/c-exp.y')
| -rw-r--r-- | gdb/c-exp.y | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gdb/c-exp.y b/gdb/c-exp.y index 9e2f808..3cee544 100644 --- a/gdb/c-exp.y +++ b/gdb/c-exp.y @@ -173,7 +173,7 @@ static void c_print_token (FILE *file, int type, YYSTYPE value); %token <ssym> NAME_OR_INT %token OPERATOR -%token STRUCT CLASS UNION ENUM SIZEOF UNSIGNED COLONCOLON +%token STRUCT CLASS UNION ENUM SIZEOF ALIGNOF UNSIGNED COLONCOLON %token TEMPLATE %token ERROR %token NEW DELETE @@ -307,6 +307,10 @@ exp : SIZEOF exp %prec UNARY { write_exp_elt_opcode (pstate, UNOP_SIZEOF); } ; +exp : ALIGNOF '(' type_exp ')' %prec UNARY + { write_exp_elt_opcode (pstate, UNOP_ALIGNOF); } + ; + exp : exp ARROW name { write_exp_elt_opcode (pstate, STRUCTOP_PTR); write_exp_string (pstate, $3); @@ -2329,6 +2333,8 @@ static const struct token ident_tokens[] = {"struct", STRUCT, OP_NULL, 0}, {"signed", SIGNED_KEYWORD, OP_NULL, 0}, {"sizeof", SIZEOF, OP_NULL, 0}, + {"_Alignof", ALIGNOF, OP_NULL, 0}, + {"alignof", ALIGNOF, OP_NULL, FLAG_CXX}, {"double", DOUBLE_KEYWORD, OP_NULL, 0}, {"false", FALSEKEYWORD, OP_NULL, FLAG_CXX}, {"class", CLASS, OP_NULL, FLAG_CXX}, |