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Add new argument NOSIDE to find_overload_match.

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This is a fix for PR c++/17132.
If this new argument is set to EVAL_AVOID_SIDE_EFFECTS, then the object's
memory will not be read while picking the best overload match.

gdb/

	* eval.c: Update all calls to find_overload_match.
	* valarith.c: Likewise.
	(value_user_defined_cpp_op, value_user_defined_op): New
	argument NOSIDE.  Update all callers.
	* valops.c (find_overload_match): New argument NOSIDE.
	* value.h (find_overload_match): Update signature.

gdb/testsuite

	* gdb.cp/pr17132.cc: New file.
	* gdb.cp/pr17132.exp: New file.
This commit is contained in:
Siva Chandra
2014-07-09 10:25:48 -07:00
parent 940df40812
commit e66d444669
8 changed files with 146 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
gdb/valarith.c
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@ -286,7 +286,7 @@ unop_user_defined_p (enum exp_opcode op, struct value *arg1)
static struct value *
value_user_defined_cpp_op (struct value **args, int nargs, char *operator,
int *static_memfuncp)
int *static_memfuncp, enum noside noside)
{
struct symbol *symp = NULL;
@ -295,7 +295,7 @@ value_user_defined_cpp_op (struct value **args, int nargs, char *operator,
find_overload_match (args, nargs, operator, BOTH /* could be method */,
&args[0] /* objp */,
NULL /* pass NULL symbol since symbol is unknown */,
&valp, &symp, static_memfuncp, 0);
&valp, &symp, static_memfuncp, 0, noside);
if (valp)
return valp;
@ -317,12 +317,15 @@ value_user_defined_cpp_op (struct value **args, int nargs, char *operator,
static struct value *
value_user_defined_op (struct value **argp, struct value **args, char *name,
int *static_memfuncp, int nargs)
int *static_memfuncp, int nargs, enum noside noside)
{
struct value *result = NULL;
if (current_language->la_language == language_cplus)
result = value_user_defined_cpp_op (args, nargs, name, static_memfuncp);
{
result = value_user_defined_cpp_op (args, nargs, name, static_memfuncp,
noside);
}
else
result = value_struct_elt (argp, args, name, static_memfuncp,
"structure");
@ -471,7 +474,7 @@ value_x_binop (struct value *arg1, struct value *arg2, enum exp_opcode op,
}
argvec[0] = value_user_defined_op (&arg1, argvec + 1, tstr,
&static_memfuncp, 2);
&static_memfuncp, 2, noside);
if (argvec[0])
{
@ -582,7 +585,7 @@ value_x_unop (struct value *arg1, enum exp_opcode op, enum noside noside)
}
argvec[0] = value_user_defined_op (&arg1, argvec + 1, tstr,
&static_memfuncp, nargs);
&static_memfuncp, nargs, noside);
if (argvec[0])
{