https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81584
Bug ID: 81584
Summary: Pretty Printer for string* doesn't work
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: ghjghj530-bubu at yahoo dot de
Target Milestone: ---
GCC 6.3, GDB 7.10, building with: -D_GLIBCXX_USE_CXX11_ABI=1
Code:
std::string fooVar = "hello world";
std::string* pFooVar = &fooVar;
(gdb) p pFooVar
p pFooVar
$4 = Traceback (most recent call last):
File "*\gdb-7.10/python\libstdcxx\v6\printers.py", line xx, in to_string
reptype = gdb.lookup_type (str (realtype) + '::_Rep').pointer ()
gdb.error: No type named std::__cxx11::string *::_Rep.
I changed the python script to this and it worked for me:
def __init__(self, typename, val):
self.val = val
def to_string(self):
# Make sure &string and string* works, too.
type = self.val.type
if type.code == gdb.TYPE_CODE_REF or type.code == gdb.TYPE_CODE_PTR:
type = type.target ()
# Change to original printer to make string* work: Check for new/old
string after dereferencing
typeName = str(type)
new_string = typeName.find("::__cxx11::basic_string") != -1 or
typeName.find("::__cxx11::string") != -1
# Calculate the length of the string so that to_string returns the
string according to length,
# not according to first null encountered.
ptr = self.val ['_M_dataplus']['_M_p']
if new_string:
......
......
