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From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To: linux-sparse@vger.kernel.org
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Subject: [PATCH 10/17] scope: move scope opening/ending inside compound_statement()
Date: Mon, 13 Apr 2020 18:15:58 +0200	[thread overview]
Message-ID: <20200413161605.95900-11-luc.vanoostenryck@gmail.com> (raw)
In-Reply-To: <20200413161605.95900-1-luc.vanoostenryck@gmail.com>

A compound statement starts and ends a block scope, so
it's better to start & end this scope inside the function
parsing the statement: compound_statement.
The only exception is for the body of a function where
the scope also enclose the parameter declaration but that
is fine since the function is special anyway.

Move the calls to start & close the block scope inside
compound_statement() and directly call statement_list()
for the function body.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
 expression.c |  2 --
 parse.c      | 13 ++++++-------
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/expression.c b/expression.c
index 5b9bddfe456e..78e577cf10a1 100644
--- a/expression.c
+++ b/expression.c
@@ -71,9 +71,7 @@ struct token *parens_expression(struct token *token, struct expression **expr, c
 		struct statement *stmt = alloc_statement(token->pos, STMT_COMPOUND);
 		*expr = e;
 		e->statement = stmt;
-		start_symbol_scope();
 		token = compound_statement(token->next, stmt);
-		end_symbol_scope();
 		token = expect(token, '}', "at end of statement expression");
 	} else
 		token = parse_expression(token, expr);
diff --git a/parse.c b/parse.c
index a29c67c8cf41..5da314cd05ee 100644
--- a/parse.c
+++ b/parse.c
@@ -2547,11 +2547,7 @@ static struct token *statement(struct token *token, struct statement **tree)
 	}
 
 	if (match_op(token, '{')) {
-		stmt->type = STMT_COMPOUND;
-		start_symbol_scope();
 		token = compound_statement(token->next, stmt);
-		end_symbol_scope();
-		
 		return expect(token, '}', "at end of compound statement");
 	}
 			
@@ -2658,7 +2654,10 @@ static struct token *parameter_type_list(struct token *token, struct symbol *fn)
 
 struct token *compound_statement(struct token *token, struct statement *stmt)
 {
+	stmt->type = STMT_COMPOUND;
+	start_symbol_scope();
 	token = statement_list(token, &stmt->stmts);
+	end_symbol_scope();
 	return token;
 }
 
@@ -2810,15 +2809,15 @@ static struct token *parse_function_body(struct token *token, struct symbol *dec
 		decl->ctype.modifiers |= MOD_EXTERN;
 
 	stmt = start_function(decl);
-
 	*p = stmt;
+
 	FOR_EACH_PTR (base_type->arguments, arg) {
 		declare_argument(arg, base_type);
 	} END_FOR_EACH_PTR(arg);
 
-	token = compound_statement(token->next, stmt);

  parent reply	other threads:[~2020-04-13 16:16 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-13 16:15 [PATCH 00/17] detect invalid branches at evaluation time Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 01/17] bad-goto: add testcase for 'jump inside discarded expression statement' Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 02/17] bad-goto: add testcases for linearization of invalid labels Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 03/17] bad-goto: add more testcases Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 04/17] bad-goto: do not linearize if the IR will be invalid Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 05/17] bad-goto: reorg test in evaluate_goto_statement() Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 06/17] bad-goto: simplify testing of undeclared labels Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 07/17] bad-goto: do not linearize function with " Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 08/17] bad-goto: catch labels with reserved names Luc Van Oostenryck
2020-04-13 16:15 ` [PATCH 09/17] scope: no memset() needed after __alloc_scope() Luc Van Oostenryck
2020-04-13 16:15 ` Luc Van Oostenryck [this message]
2020-04-13 16:15 ` [PATCH 11/17] scope: make function scope the same as the body block scope Luc Van Oostenryck
2020-04-13 16:16 ` [PATCH 12/17] scope: s/{start,end}_symbol_scope/{start,end}_block_scope/ Luc Van Oostenryck
2020-04-13 16:16 ` [PATCH 13/17] scope: let labels have their own scope Luc Van Oostenryck
2020-04-13 17:30   ` Linus Torvalds
2020-04-13 16:16 ` [PATCH 14/17] scope: add is_in_scope() Luc Van Oostenryck
2020-04-13 16:16 ` [PATCH 15/17] scope: give a scope for labels & gotos Luc Van Oostenryck
2020-04-13 17:52   ` Linus Torvalds
2020-04-13 18:54     ` Luc Van Oostenryck
2020-04-13 19:32       ` Linus Torvalds
2020-04-13 20:00         ` Luc Van Oostenryck
2020-04-13 22:40         ` Linus Torvalds
2020-04-13 23:39           ` Luc Van Oostenryck
2020-04-14  7:49             ` Luc Van Oostenryck
2020-04-14 18:19               ` Linus Torvalds
2020-04-14 23:09                 ` Luc Van Oostenryck
2020-04-15  0:59                   ` Linus Torvalds
2020-05-14 22:22                     ` Luc Van Oostenryck
2020-04-13 16:16 ` [PATCH 16/17] bad-goto: catch gotos inside expression statements Luc Van Oostenryck
2020-04-13 16:16 ` [PATCH 17/17] bad-goto: cleanup evaluate_goto() Luc Van Oostenryck

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