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PR c/68757: fix uninitialized src_range for various builtins

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gcc/c/ChangeLog:
	PR c/68757
	* c-parser.c (c_parser_get_builtin_args): Add
	"out_close_paren_loc" param, and write back to it.
	(c_parser_postfix_expression): Capture the closing
	parenthesis location for RID_CHOOSE_EXPR,
	RID_BUILTIN_CALL_WITH_STATIC_CHAIN, RID_BUILTIN_COMPLEX,
	RID_BUILTIN_SHUFFLE and use it to set the source range
	for such expressions; within RID_BUILTIN_COMPLEX set
	the underlying location.

gcc/testsuite/ChangeLog:
	PR c/68757
	* gcc.dg/plugin/diagnostic-test-expressions-1.c
	(test_builtin_choose_expr): New test function.
	(test_builtin_call_with_static_chain): Likewise.
	(test_builtin_complex): Likewise.
	(test_builtin_shuffle): Likewise.

From-SVN: r231414
This commit is contained in:
David Malcolm 2015-12-08 16:57:27 +00:00 • committed by David Malcolm
parent b26a3da5cc
commit 46c6e1e20e
4 changed files with 99 additions and 11 deletions
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12
gcc/c/ChangeLog
View file

@ -1,3 +1,15 @@
2015-12-08 David Malcolm <dmalcolm@redhat.com>
PR c/68757
* c-parser.c (c_parser_get_builtin_args): Add
"out_close_paren_loc" param, and write back to it.
(c_parser_postfix_expression): Capture the closing
parenthesis location for RID_CHOOSE_EXPR,
RID_BUILTIN_CALL_WITH_STATIC_CHAIN, RID_BUILTIN_COMPLEX,
RID_BUILTIN_SHUFFLE and use it to set the source range
for such expressions; within RID_BUILTIN_COMPLEX set
the underlying location.
2015-12-07 Marek Polacek <polacek@redhat.com>
PR c/68668

39
gcc/c/c-parser.c
View file

@ -6933,11 +6933,14 @@ c_parser_alignof_expression (c_parser *parser)
for the middle-end nodes like COMPLEX_EXPR, VEC_PERM_EXPR and
others. The name of the builtin is passed using BNAME parameter.
Function returns true if there were no errors while parsing and
stores the arguments in CEXPR_LIST. */
stores the arguments in CEXPR_LIST. If it returns true,
*OUT_CLOSE_PAREN_LOC is written to with the location of the closing
parenthesis. */
static bool
c_parser_get_builtin_args (c_parser *parser, const char *bname,
vec<c_expr_t, va_gc> **ret_cexpr_list,
bool choose_expr_p)
bool choose_expr_p,
location_t *out_close_paren_loc)
{
location_t loc = c_parser_peek_token (parser)->location;
vec<c_expr_t, va_gc> *cexpr_list;
@ -6955,6 +6958,7 @@ c_parser_get_builtin_args (c_parser *parser, const char *bname,
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
{
*out_close_paren_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
return true;
}
@ -6974,6 +6978,7 @@ c_parser_get_builtin_args (c_parser *parser, const char *bname,
vec_safe_push (cexpr_list, expr);
}
*out_close_paren_loc = c_parser_peek_token (parser)->location;
if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"))
return false;
@ -7594,11 +7599,13 @@ c_parser_postfix_expression (c_parser *parser)
vec<c_expr_t, va_gc> *cexpr_list;
c_expr_t *e1_p, *e2_p, *e3_p;
tree c;
location_t close_paren_loc;
c_parser_consume_token (parser);
if (!c_parser_get_builtin_args (parser,
"__builtin_choose_expr",
&cexpr_list, true))
&cexpr_list, true,
&close_paren_loc))
{
expr.value = error_mark_node;
break;
@ -7626,6 +7633,7 @@ c_parser_postfix_expression (c_parser *parser)
" a constant");
constant_expression_warning (c);
expr = integer_zerop (c) ? *e3_p : *e2_p;
set_c_expr_source_range (&expr, loc, close_paren_loc);
break;
}
case RID_TYPES_COMPATIBLE_P:
@ -7677,11 +7685,13 @@ c_parser_postfix_expression (c_parser *parser)
vec<c_expr_t, va_gc> *cexpr_list;
c_expr_t *e2_p;
tree chain_value;
location_t close_paren_loc;
c_parser_consume_token (parser);
if (!c_parser_get_builtin_args (parser,
"__builtin_call_with_static_chain",
&cexpr_list, false))
&cexpr_list, false,
&close_paren_loc))
{
expr.value = error_mark_node;
break;
@ -7710,17 +7720,20 @@ c_parser_postfix_expression (c_parser *parser)
"must be a pointer type");
else
CALL_EXPR_STATIC_CHAIN (expr.value) = chain_value;
set_c_expr_source_range (&expr, loc, close_paren_loc);
break;
}
case RID_BUILTIN_COMPLEX:
{
vec<c_expr_t, va_gc> *cexpr_list;
c_expr_t *e1_p, *e2_p;
location_t close_paren_loc;
c_parser_consume_token (parser);
if (!c_parser_get_builtin_args (parser,
"__builtin_complex",
&cexpr_list, false))
&cexpr_list, false,
&close_paren_loc))
{
expr.value = error_mark_node;
break;
@ -7765,11 +7778,12 @@ c_parser_postfix_expression (c_parser *parser)
}
pedwarn_c90 (loc, OPT_Wpedantic,
"ISO C90 does not support complex types");
expr.value = build2 (COMPLEX_EXPR,
build_complex_type
(TYPE_MAIN_VARIANT
(TREE_TYPE (e1_p->value))),
e1_p->value, e2_p->value);
expr.value = build2_loc (loc, COMPLEX_EXPR,
build_complex_type
(TYPE_MAIN_VARIANT
(TREE_TYPE (e1_p->value))),
e1_p->value, e2_p->value);
set_c_expr_source_range (&expr, loc, close_paren_loc);
break;
}
case RID_BUILTIN_SHUFFLE:
@ -7777,11 +7791,13 @@ c_parser_postfix_expression (c_parser *parser)
vec<c_expr_t, va_gc> *cexpr_list;
unsigned int i;
c_expr_t *p;
location_t close_paren_loc;
c_parser_consume_token (parser);
if (!c_parser_get_builtin_args (parser,
"__builtin_shuffle",
&cexpr_list, false))
&cexpr_list, false,
&close_paren_loc))
{
expr.value = error_mark_node;
break;
@ -7808,6 +7824,7 @@ c_parser_postfix_expression (c_parser *parser)
"%<__builtin_shuffle%>");
expr.value = error_mark_node;
}
set_c_expr_source_range (&expr, loc, close_paren_loc);
break;
}
case RID_AT_SELECTOR:

9
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,12 @@
2015-12-08 David Malcolm <dmalcolm@redhat.com>
PR c/68757
* gcc.dg/plugin/diagnostic-test-expressions-1.c
(test_builtin_choose_expr): New test function.
(test_builtin_call_with_static_chain): Likewise.
(test_builtin_complex): Likewise.
(test_builtin_shuffle): Likewise.
2015-12-08 Jiong Wang <jiong.wang@arm.com>
* gcc.target/aarch64/got_mem_hoist_1.c (dg-skip-if): Match big-endian

50
gcc/testsuite/gcc.dg/plugin/diagnostic-test-expressions-1.c
View file

@ -518,6 +518,56 @@ void test_builtin_offsetof (int i)
{ dg-end-multiline-output "" } */
}
void test_builtin_choose_expr (int i)
{
__emit_expression_range (0, __builtin_choose_expr (1, i, i) + i); /* { dg-warning "range" } */
/* { dg-begin-multiline-output "" }
__emit_expression_range (0, __builtin_choose_expr (1, i, i) + i);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
{ dg-end-multiline-output "" } */
__emit_expression_range (0, i + __builtin_choose_expr (1, i, i)); /* { dg-warning "range" } */
/* { dg-begin-multiline-output "" }
__emit_expression_range (0, i + __builtin_choose_expr (1, i, i));
~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
}
extern int f (int);
void test_builtin_call_with_static_chain (int i, void *ptr)
{
__emit_expression_range (0, __builtin_call_with_static_chain (f (i), ptr)); /* { dg-warning "range" } */
/* { dg-begin-multiline-output "" }
__emit_expression_range (0, __builtin_call_with_static_chain (f (i), ptr));
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
{ dg-end-multiline-output "" } */
}
void test_builtin_complex (float i, float j)
{
__emit_expression_range (0, __builtin_complex (i, j) ); /* { dg-warning "range" } */
/* { dg-begin-multiline-output "" }
__emit_expression_range (0, __builtin_complex (i, j) );
^~~~~~~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
}
typedef int v4si __attribute__ ((vector_size (16)));
void test_builtin_shuffle (v4si a, v4si b, v4si mask)
{
__emit_expression_range (0, __builtin_shuffle (a, mask) ); /* { dg-warning "range" } */
/* { dg-begin-multiline-output "" }
__emit_expression_range (0, __builtin_shuffle (a, mask) );
^~~~~~~~~~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
__emit_expression_range (0, __builtin_shuffle (a, b, mask) ); /* { dg-warning "range" } */
/* { dg-begin-multiline-output "" }
__emit_expression_range (0, __builtin_shuffle (a, b, mask) );
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
}
/* Examples of non-trivial expressions. ****************************/
extern double sqrt (double x);