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libcpp: preserve ranges within macro expansions (PR c++/79300)

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gcc/testsuite/ChangeLog:
	PR c++/79300
	* g++.dg/diagnostic/pr79300.C: New test case.

libcpp/ChangeLog:
	PR c++/79300
	* line-map.c (linemap_macro_loc_to_def_point): Preserve range
	information for macro expansions by delaying resolving ad-hoc
	locations until within the loop.

From-SVN: r250058
This commit is contained in:
David Malcolm 2017-07-07 18:49:09 +00:00 committed by David Malcolm
parent 57f49e990f
commit 738f7c2e12
4 changed files with 64 additions and 6 deletions
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5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2017-07-07 David Malcolm <dmalcolm@redhat.com>
PR c++/79300
* g++.dg/diagnostic/pr79300.C: New test case.
2017-07-07 Michael Meissner <meissner@linux.vnet.ibm.com>
* gcc.target/powerpc/clone1.c: Add check to make sure the

44
gcc/testsuite/g++.dg/diagnostic/pr79300.C Normal file
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@ -0,0 +1,44 @@
// { dg-options "-fdiagnostics-show-caret" }
#define TEST_1_DEPTH_0 throw bad_alloc; // { dg-line define_TEST_1_DEPTH_0 }
void test_1 ()
{
TEST_1_DEPTH_0 // { dg-line use_TEST_1_DEPTH_0 }
}
// { dg-error "'bad_alloc' was not declared in this scope" "" { target *-*-* } define_TEST_1_DEPTH_0 }
/* { dg-begin-multiline-output "" }
#define TEST_1_DEPTH_0 throw bad_alloc;
^~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "in expansion of macro 'TEST_1_DEPTH_0'" "" { target *-*-* } use_TEST_1_DEPTH_0 }
/* { dg-begin-multiline-output "" }
TEST_1_DEPTH_0
^~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
#define TEST_2_DEPTH_0 throw bad_alloc; // { dg-line define_TEST_2_DEPTH_0 }
#define TEST_2_DEPTH_1 TEST_2_DEPTH_0 // { dg-line define_TEST_2_DEPTH_1 }
void test_2 ()
{
TEST_2_DEPTH_1 // { dg-line use_TEST_2_DEPTH_1 }
}
// { dg-error "'bad_alloc' was not declared in this scope" "" { target *-*-* } define_TEST_2_DEPTH_0 }
/* { dg-begin-multiline-output "" }
#define TEST_2_DEPTH_0 throw bad_alloc;
^~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "in expansion of macro 'TEST_2_DEPTH_0'" "" { target *-*-* } define_TEST_2_DEPTH_1 }
/* { dg-begin-multiline-output "" }
#define TEST_2_DEPTH_1 TEST_2_DEPTH_0
^~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
// { dg-message "in expansion of macro 'TEST_2_DEPTH_1'" "" { target *-*-* } use_TEST_2_DEPTH_1 }
/* { dg-begin-multiline-output "" }
TEST_2_DEPTH_1
^~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */

7
libcpp/ChangeLog
View File

@ -1,3 +1,10 @@
2017-07-07 David Malcolm <dmalcolm@redhat.com>
PR c++/79300
* line-map.c (linemap_macro_loc_to_def_point): Preserve range
information for macro expansions by delaying resolving ad-hoc
locations until within the loop.
2017-07-06 David Malcolm <dmalcolm@redhat.com>
PR c++/79300

14
libcpp/line-map.c
View File

@ -1440,21 +1440,23 @@ linemap_macro_loc_to_def_point (struct line_maps *set,
{
struct line_map *map;
if (IS_ADHOC_LOC (location))
location = set->location_adhoc_data_map.data[location
& MAX_SOURCE_LOCATION].locus;
linemap_assert (set && location >= RESERVED_LOCATION_COUNT);
while (true)
{
map = const_cast <line_map *> (linemap_lookup (set, location));
source_location caret_loc;
if (IS_ADHOC_LOC (location))
caret_loc = get_location_from_adhoc_loc (set, location);
else
caret_loc = location;
map = const_cast <line_map *> (linemap_lookup (set, caret_loc));
if (!linemap_macro_expansion_map_p (map))
break;
location =
linemap_macro_map_loc_to_def_point (linemap_check_macro (map),
location);
caret_loc);
}
if (original_map)