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2003-06-30 David Carlton <carlton@kealia.com>

Browse Source 
Band-aid for PR c++/1245.
	* Makefile.in (cp-support.o): Depend on complaints_h.
	* cp-support.c: Include complaints.h.  Add declaration for
	find_last_component.
	(cp_find_first_component): Separate code into
	cp_find_first_component_aux.
	(cp_find_first_component_aux): Call demangled_name_complaint.
	(demangled_name_complaint): New.

2003-06-30  David Carlton  <carlton@kealia.com>

	* gdb.c++/maint.exp (test_invalid_name): New.
	(test_first_component): Add tests for invalid names.
This commit is contained in:
David Carlton
2003-06-30 16:21:16 +00:00
parent a257b5bbf7
commit b2a7f303a2
5 changed files with 98 additions and 14 deletions
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72
gdb/cp-support.c
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@@ -32,6 +32,16 @@
#include "frame.h"
#include "symtab.h"
#include "block.h"
#include "complaints.h"
/* Functions related to demangled name parsing. */
static const char *find_last_component (const char *name);
static unsigned int cp_find_first_component_aux (const char *name,
int permissive);
static void demangled_name_complaint (const char *name);
/* Functions/variables related to overload resolution. */
@@ -199,21 +209,32 @@ method_name_from_physname (const char *physname)
boundary of the first component: so, given 'A::foo' or 'A::B::foo'
it returns the 1, and given 'foo', it returns 0. */
/* Well, that's what it should do when called externally, but to make
the recursion easier, it also stops if it reaches an unexpected ')'
or '>'. */
/* The character in NAME indexed by the return value is guaranteed to
always be either ':' or '\0'. */
/* NOTE: carlton/2003-03-13: This function is currently only intended
for internal use: it's probably not entirely safe when called on
user-generated input, because some of the 'index += 2' lines might
go past the end of malformed input. */
user-generated input, because some of the 'index += 2' lines in
cp_find_first_component_aux might go past the end of malformed
input. */
unsigned int
cp_find_first_component (const char *name)
{
return cp_find_first_component_aux (name, 0);
}
/* Helper function for cp_find_first_component. Like that function,
it returns the length of the first component of NAME, but to make
the recursion easier, it also stops if it reaches an unexpected ')'
or '>' if the value of PERMISSIVE is nonzero. */
/* Let's optimize away calls to strlen("operator"). */
#define LENGTH_OF_OPERATOR 8
unsigned int
cp_find_first_component (const char *name)
static unsigned int
cp_find_first_component_aux (const char *name, int permissive)
{
unsigned int index = 0;
/* Operator names can show up in unexpected places. Since these can
@@ -234,11 +255,15 @@ cp_find_first_component (const char *name)
terminating the component or a '::' between two
components. (Hence the '+ 2'.) */
index += 1;
for (index += cp_find_first_component (name + index);
for (index += cp_find_first_component_aux (name + index, 1);
name[index] != '>';
index += cp_find_first_component (name + index))
index += cp_find_first_component_aux (name + index, 1))
{
gdb_assert (name[index] == ':');
if (name[index] != ':')
{
demangled_name_complaint (name);
return strlen (name);
}
index += 2;
}
operator_possible = 1;
@@ -246,17 +271,28 @@ cp_find_first_component (const char *name)
case '(':
/* Similar comment as to '<'. */
index += 1;
for (index += cp_find_first_component (name + index);
for (index += cp_find_first_component_aux (name + index, 1);
name[index] != ')';
index += cp_find_first_component (name + index))
index += cp_find_first_component_aux (name + index, 1))
{
gdb_assert (name[index] == ':');
if (name[index] != ':')
{
demangled_name_complaint (name);
return strlen (name);
}
index += 2;
}
operator_possible = 1;
break;
case '>':
case ')':
if (permissive)
return index;
else
{
demangled_name_complaint (name);
return strlen (name);
}
case '\0':
case ':':
return index;
@@ -315,6 +351,16 @@ cp_find_first_component (const char *name)
}
}
/* Complain about a demangled name that we don't know how to parse.
NAME is the demangled name in question. */
static void
demangled_name_complaint (const char *name)
{
complaint (&symfile_complaints,
"unexpected demangled name '%s'", name);
}
/* If NAME is the fully-qualified name of a C++
function/variable/method/etc., this returns the length of its
entire prefix: all of the namespaces and classes that make up its