From f09c48b2ac55b2f9b5c3688e76fb4b91c3325fbb Mon Sep 17 00:00:00 2001
From: David Malcolm <dmalcolm@redhat.com>
Date: Fri, 20 Nov 2015 11:12:47 -0500
Subject: [PATCH] Fix PR objc/68438 (uninitialized source ranges)
gcc/c/ChangeLog:
PR objc/68438
* c-parser.c (c_parser_postfix_expression): Set up source ranges
for various Objective-C constructs: Class.name syntax,
@selector(), @protocol, @encode(), and [] message syntax.
gcc/testsuite/ChangeLog:
PR objc/68438
* objc.dg/plugin/diagnostic-test-expressions-1.m: New test file.
* objc.dg/plugin/plugin.exp: New file, based on
gcc.dg/plugin/plugin.exp.
---
gcc/c/c-parser.c | 17 +++-
.../objc.dg/plugin/diagnostic-test-expressions-1.m | 94 ++++++++++++++++++++++
gcc/testsuite/objc.dg/plugin/plugin.exp | 90 +++++++++++++++++++++
3 files changed, 198 insertions(+), 3 deletions(-)
create mode 100644 gcc/testsuite/objc.dg/plugin/diagnostic-test-expressions-1.m
create mode 100644 gcc/testsuite/objc.dg/plugin/plugin.exp
@@ -7338,10 +7338,13 @@ c_parser_postfix_expression (c_parser *parser)
expr.value = error_mark_node;
break;
}
- component = c_parser_peek_token (parser)->value;
+ c_token *component_tok = c_parser_peek_token (parser);
+ component = component_tok->value;
+ location_t end_loc = component_tok->get_finish ();
c_parser_consume_token (parser);
expr.value = objc_build_class_component_ref (class_name,
component);
+ set_c_expr_source_range (&expr, loc, end_loc);
break;
}
default:
@@ -7816,9 +7819,11 @@ c_parser_postfix_expression (c_parser *parser)
}
{
tree sel = c_parser_objc_selector_arg (parser);
+ location_t close_loc = c_parser_peek_token (parser)->location;
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
expr.value = objc_build_selector_expr (loc, sel);
+ set_c_expr_source_range (&expr, loc, close_loc);
}
break;
case RID_AT_PROTOCOL:
@@ -7839,9 +7844,11 @@ c_parser_postfix_expression (c_parser *parser)
{
tree id = c_parser_peek_token (parser)->value;
c_parser_consume_token (parser);
+ location_t close_loc = c_parser_peek_token (parser)->location;
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
expr.value = objc_build_protocol_expr (id);
+ set_c_expr_source_range (&expr, loc, close_loc);
}
break;
case RID_AT_ENCODE:
@@ -7860,11 +7867,13 @@ c_parser_postfix_expression (c_parser *parser)
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
break;
}
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
- "expected %<)%>");
{
+ location_t close_loc = c_parser_peek_token (parser)->location;
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
+ "expected %<)%>");
tree type = groktypename (t1, NULL, NULL);
expr.value = objc_build_encode_expr (type);
+ set_c_expr_source_range (&expr, loc, close_loc);
}
break;
case RID_GENERIC:
@@ -7907,9 +7916,11 @@ c_parser_postfix_expression (c_parser *parser)
c_parser_consume_token (parser);
receiver = c_parser_objc_receiver (parser);
args = c_parser_objc_message_args (parser);
+ location_t close_loc = c_parser_peek_token (parser)->location;
c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
"expected %<]%>");
expr.value = objc_build_message_expr (receiver, args);
+ set_c_expr_source_range (&expr, loc, close_loc);
break;
}
/* Else fall through to report error. */
new file mode 100644
@@ -0,0 +1,94 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fdiagnostics-show-caret" } */
+
+/* This file is similar to diagnostic-test-expressions-1.c
+ (see the notes in that file); this file adds test
+ coverage for various Objective C constructs. */
+
+extern void __emit_expression_range (int dummy, ...);
+
+@protocol prot
+@end
+
+@interface tests <prot>
+- (int) func0;
+- (int) func1:(int)i;
++ (int) func2;
+- (void) test_sending_messages;
++ (void) test_class_dot_name;
+- (void) test_at_selector;
+- (void) test_at_protocol;
+- (void) test_at_encode:(int)i;
+@end
+
+@implementation tests
+- (int) func0
+{
+ return 42;
+}
+- (int) func1:(int)i
+{
+ return i * i;
+}
++ (int) func2
+{
+ return 0;
+}
+- (void) test_sending_messages
+{
+ __emit_expression_range ( 0, [self func0] ); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+ __emit_expression_range ( 0, [self func0] );
+ ~~~~~~~~~~~~
+ { dg-end-multiline-output "" } */
+ __emit_expression_range ( 0, [self func1:5] ); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+ __emit_expression_range ( 0, [self func1:5] );
+ ~~~~~~~~~~~~~~
+ { dg-end-multiline-output "" } */
+}
++ (void) test_class_dot_name
+{
+ __emit_expression_range ( 0, tests.func2 ); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+ __emit_expression_range ( 0, tests.func2 );
+ ~~~~~~~~~~~
+ { dg-end-multiline-output "" } */
+}
+- (void) test_at_selector
+{
+ __emit_expression_range ( 0, @selector(func0) ); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+ __emit_expression_range ( 0, @selector(func0) );
+ ^~~~~~~~~~~~~~~~
+ { dg-end-multiline-output "" } */
+}
+- (void) test_at_protocol
+{
+ __emit_expression_range ( 0, @protocol(prot) ); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+ __emit_expression_range ( 0, @protocol(prot) );
+ ~~~~~~~~~~~~~~~
+ { dg-end-multiline-output "" } */
+}
+- (void) test_at_encode:(int)i
+{
+ /* @encode() generates a STRING_CST which doesn't retain a location
+ after parsing, so we need to access it via compound expressions
+ that can't be folded away. */
+
+ /* Verify start. */
+ __emit_expression_range ( 0, @encode(int) + i ); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+ __emit_expression_range ( 0, @encode(int) + i );
+ ~~~~~~~~~~~~~^~~
+ { dg-end-multiline-output "" } */
+
+ /* Verify finish. */
+ __emit_expression_range ( 0, i + @encode(int) ); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+ __emit_expression_range ( 0, i + @encode(int) );
+ ~~^~~~~~~~~~~~~~
+ { dg-end-multiline-output "" } */
+}
+@end
new file mode 100644
@@ -0,0 +1,90 @@
+# Copyright (C) 2009-2015 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+# Test the functionality of the GCC plugin support
+
+load_lib target-supports.exp
+load_lib objc-dg.exp
+
+global TESTING_IN_BUILD_TREE
+global ENABLE_PLUGIN
+
+# The plugin testcases currently only work when the build tree is available.
+# Also check whether the host supports plugins.
+if { ![info exists TESTING_IN_BUILD_TREE] || ![info exists ENABLE_PLUGIN] } {
+ return
+}
+
+# If a testcase doesn't have special options, use these.
+global DEFAULT_CFLAGS
+if ![info exists DEFAULT_CFLAGS] then {
+ set DEFAULT_CFLAGS " -ansi -pedantic-errors"
+}
+
+# The procedures in plugin-support.exp need these parameters.
+set default_flags $DEFAULT_CFLAGS
+
+if $tracelevel then {
+ strace $tracelevel
+}
+
+# Load support procs.
+load_lib plugin-support.exp
+
+# These tests don't run runtest_file_p consistently if it
+# doesn't return the same values, so disable parallelization
+# of this *.exp file. The first parallel runtest to reach
+# this will run all the tests serially.
+if ![gcc_parallel_test_run_p plugin] {
+ return
+}
+gcc_parallel_test_enable 0
+
+# Specify the plugin source file and the associated test files in a list.
+# plugin_test_list={ {plugin1 test1 test2 ...} {plugin2 test1 ...} ... }
+set plugin_test_list [list \
+ { ../../gcc.dg/plugin/diagnostic_plugin_test_tree_expression_range.c \
+ diagnostic-test-expressions-1.m } \
+]
+
+foreach plugin_test $plugin_test_list {
+ # Replace each source file with its full-path name
+ for {set i 0} {$i < [llength $plugin_test]} {incr i} {
+ set basename [lindex $plugin_test $i]
+ set plugin_test [lreplace $plugin_test $i $i $srcdir/$subdir/$basename]
+ }
+ set plugin_src [lindex $plugin_test 0]
+ # If we're only testing specific files and this isn't one of them, skip it.
+ if ![runtest_file_p $runtests $plugin_src] then {
+ continue
+ }
+ set plugin_input_tests [lreplace $plugin_test 0 0]
+ plugin-test-execute $plugin_src $plugin_input_tests
+}
+
+# run the plugindir tests
+
+# Initialize `dg'.
+dg-init
+
+# Main loop.
+dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/plugindir*.m]] \
+ "" $DEFAULT_CFLAGS
+
+# All done.
+dg-finish
+
+gcc_parallel_test_enable 1
--
1.8.5.3