Add support for the sizeof function in Rust
2016-10-29 Manish Goregaokar <manish@mozilla.com> gdb/ChangeLog: * rust-exp.y: Parse `sizeof(exp)` as `UNOP_SIZEOF` gdb/testsuite/ChangeLog: * gdb.rust/simple.exp: Add tests for `sizeof(expr)`
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@ -1,3 +1,7 @@
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2016-10-29 Manish Goregaokar <manish@mozilla.com>
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* rust-exp.y: Parse `sizeof(exp)` as `UNOP_SIZEOF`
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2016-10-28 Manish Goregaokar <manish@mozilla.com>
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* rust-lang.c (rust_union_is_untagged): Add function to
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@ -276,6 +276,7 @@ struct rust_op
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%token <voidval> KW_EXTERN
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%token <voidval> KW_CONST
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%token <voidval> KW_FN
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%token <voidval> KW_SIZEOF
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/* Operator tokens. */
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%token <voidval> DOTDOT
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@ -371,7 +372,7 @@ expr:
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| array_expr
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| idx_expr
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| range_expr
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| unop_expr
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| unop_expr /* Must precede call_expr because of ambiguity with sizeof. */
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| binop_expr
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| paren_expr
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| call_expr
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@ -577,7 +578,8 @@ unop_expr:
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| '&' KW_MUT expr %prec UNARY
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{ $$ = ast_unary (UNOP_ADDR, $3); }
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| KW_SIZEOF '(' expr ')' %prec UNARY
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{ $$ = ast_unary (UNOP_SIZEOF, $3); }
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;
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binop_expr:
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@ -872,6 +874,7 @@ static const struct token_info identifier_tokens[] =
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{ "true", KW_TRUE, OP_NULL },
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{ "extern", KW_EXTERN, OP_NULL },
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{ "fn", KW_FN, OP_NULL },
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{ "sizeof", KW_SIZEOF, OP_NULL },
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};
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/* Operator tokens, sorted longest first. */
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@ -2194,6 +2197,7 @@ convert_ast_to_expression (struct parser_state *state,
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case UNOP_COMPLEMENT:
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case UNOP_IND:
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case UNOP_ADDR:
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case UNOP_SIZEOF:
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convert_ast_to_expression (state, operation->left.op, top);
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write_exp_elt_opcode (state, operation->opcode);
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break;
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@ -1,3 +1,7 @@
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2016-10-29 Manish Goregaokar <manish@mozilla.com>
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* gdb.rust/simple.exp: Add tests for `sizeof(expr)`
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2016-10-27 Manish Goregaokar <manish@mozilla.com>
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* gdb.rust/simple.rs: Add test for univariant enums without discriminants
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@ -33,6 +33,7 @@ if {![runto ${srcfile}:$line]} {
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gdb_test "print a" " = \\(\\)"
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gdb_test "ptype a" " = \\(\\)"
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gdb_test "print sizeof(a)" " = 0"
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gdb_test "print b" " = \\\[\\\]"
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gdb_test "ptype b" " = \\\[i32; 0\\\]"
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@ -41,6 +42,7 @@ gdb_test "print *(&b as *const \[i32; 0_0\])" " = \\\[\\\]"
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gdb_test "print c" " = 99"
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gdb_test "ptype c" " = i32"
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gdb_test "print sizeof(c)" " = 4"
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gdb_test "print c = 87" " = \\(\\)"
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gdb_test "print c" " = 87"
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@ -127,7 +129,7 @@ gdb_test "print nosuchsymbol" \
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gdb_test "print e" " = simple::MoreComplicated::Two\\(73\\)"
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gdb_test "print e2" \
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" = simple::MoreComplicated::Four\\{this: true, is: 8, a: 109 'm', struct_: 100, variant: 10\\}"
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gdb_test "print sizeof(e)" " = 24"
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gdb_test_sequence "ptype e" "" {
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" = enum simple::MoreComplicated \\{"
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" One,"
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