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* [gcc r14-7147] libstdc++: Add GDB printer for std::integral_constant
@ 2024-01-11 17:56 Jonathan Wakely
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From: Jonathan Wakely @ 2024-01-11 17:56 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:cd2022f39297198adad0e284f8780cb3d83d0f85
commit r14-7147-gcd2022f39297198adad0e284f8780cb3d83d0f85
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Wed Jan 10 10:53:43 2024 +0000
libstdc++: Add GDB printer for std::integral_constant
libstdc++-v3/ChangeLog:
* python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
Add printer for std::integral_constant.
* testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
Diff:
---
libstdc++-v3/python/libstdcxx/v6/printers.py | 20 ++++++++++++++++++++
.../testsuite/libstdc++-prettyprinters/cxx11.cc | 7 +++++++
2 files changed, 27 insertions(+)
diff --git a/libstdc++-v3/python/libstdcxx/v6/printers.py b/libstdc++-v3/python/libstdcxx/v6/printers.py
index bf0dc52ab8c..032a7aa58a2 100644
--- a/libstdc++-v3/python/libstdcxx/v6/printers.py
+++ b/libstdc++-v3/python/libstdcxx/v6/printers.py
@@ -2306,6 +2306,23 @@ class StdLocalePrinter(printer_base):
mod = ' with "{}={}"'.format(cat, other)
return 'std::locale = "{}"{}'.format(name, mod)
+class StdIntegralConstantPrinter(printer_base):
+ """Print a std::true_type or std::false_type."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = typename
+
+ def to_string(self):
+ value_type = self._val.type.template_argument(0)
+ value = self._val.type.template_argument(1)
+ if value_type.code == gdb.TYPE_CODE_BOOL:
+ if value:
+ return "std::true_type"
+ else:
+ return "std::false_type"
+ typename = strip_versioned_namespace(self._typename)
+ return "{}<{}, {}>".format(typename, value_type, value)
# A "regular expression" printer which conforms to the
# "SubPrettyPrinter" protocol from gdb.printing.
@@ -2788,6 +2805,9 @@ def build_libstdcxx_dictionary():
# vector<bool>
libstdcxx_printer.add_version('std::', 'locale', StdLocalePrinter)
+ libstdcxx_printer.add_version('std::', 'integral_constant',
+ StdIntegralConstantPrinter)
+
if hasattr(gdb.Value, 'dynamic_type'):
libstdcxx_printer.add_version('std::', 'error_code',
StdErrorCodePrinter)
diff --git a/libstdc++-v3/testsuite/libstdc++-prettyprinters/cxx11.cc b/libstdc++-v3/testsuite/libstdc++-prettyprinters/cxx11.cc
index bc869fd4122..f867ea18306 100644
--- a/libstdc++-v3/testsuite/libstdc++-prettyprinters/cxx11.cc
+++ b/libstdc++-v3/testsuite/libstdc++-prettyprinters/cxx11.cc
@@ -207,6 +207,13 @@ main()
std::atomic<Value> av{{8, 9}};
// { dg-final { note-test av {std::atomic<Value> = { {i = 8, j = 9} }} } }
+ std::integral_constant<int, 1> one;
+ // { dg-final { note-test one {std::integral_constant<int, 1>} } }
+ std::integral_constant<bool, true> truth;
+ // { dg-final { note-test truth {std::true_type} } }
+ std::integral_constant<bool, 0> lies;
+ // { dg-final { note-test lies {std::false_type} } }
+
placeholder(""); // Mark SPOT
use(efl);
use(fl);
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