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Fix nim-gdb.py script (#24824)

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Script wasn't working on my machine with GDB 16.2
Main issues
 - `gdb.types` wasn't imported, leading to import error on initial load
 - dollar function didn't work with the new mangling scheme

Fixes them, also updates the test script to work with some new mangling
changes.

Test evidence

![image](https://github.com/user-attachments/assets/450b020f-1665-4ed2-9073-d02537150914)

(cherry picked from commit e0a4876981)
This commit is contained in:
Jake Leahy
2025-03-29 23:28:28 +11:00
committed by narimiran
parent 1d0e1679a8
commit 65a0ec3964
2 changed files with 8 additions and 7 deletions
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10
tests/untestable/gdb/gdb_pretty_printer_test.py
View File

@@ -27,14 +27,14 @@ outputs = [
'seq(3, 3) = {1, 2, 3}',
'seq(3, 3) = {"one", "two", "three"}',
'Table(3, 64) = {[4] = "four", [5] = "five", [6] = "six"}',
'Table(3, 8) = {["two"] = 2, ["three"] = 3, ["one"] = 1}',
'Table(3, 8) = {["three"] = 3, ["one"] = 1, ["two"] = 2}',
'{a = 1, b = "some string"}',
'("hello", 42)'
]
argRegex = re.compile("^.* = (?:No suitable Nim \$ operator found for type: \w+\s*)*(.*)$")
argRegex = re.compile(r"^.* = (?:No suitable Nim \$ operator found for type: \w+\s*)*(.*)$")
# Remove this error message which can pop up
noSuitableRegex = re.compile("(No suitable Nim \$ operator found for type: \w+\s*)")
noSuitableRegex = re.compile(r"(No suitable Nim \$ operator found for type: \w+\s*)")
for i, expected in enumerate(outputs):
gdb.write(f"\x1b[38;5;105m{i+1}) expecting: {expected}: \x1b[0m", gdb.STDLOG)
@@ -46,11 +46,11 @@ for i, expected in enumerate(outputs):
if i == 6:
# myArray is passed as pointer to int to myDebug. I look up myArray up in the stack
gdb.execute("up")
raw = gdb.parse_and_eval("myArray")
raw = gdb.parse_and_eval("myArray_1")
elif i == 9:
# myOtherArray is passed as pointer to int to myDebug. I look up myOtherArray up in the stack
gdb.execute("up")
raw = gdb.parse_and_eval("myOtherArray")
raw = gdb.parse_and_eval("myOtherArray_1")
else:
rawArg = re.sub(noSuitableRegex, "", gdb.execute("info args", to_string = True))
raw = rawArg.split("=", 1)[-1].strip()

5
tools/debug/nim-gdb.py
View File

@@ -1,4 +1,5 @@
import gdb
import gdb.types
import re
import sys
import traceback
@@ -151,8 +152,8 @@ class DollarPrintFunction (gdb.Function):
"Nim's equivalent of $ operator as a gdb function, available in expressions `print $dollar(myvalue)"
dollar_functions = re.findall(
r'(?:NimStringDesc \*|NimStringV2)\s?(dollar__[A-z0-9_]+?)\(([^,)]*)\);',
gdb.execute("info functions dollar__", True, True)
r'(?:NimStringDesc \*|NimStringV2)\s?([A-z0-9_]+?dollar_[A-z0-9_]+?)\(([^,)]*)\);',
gdb.execute("info functions dollar_", True, True)
)
def __init__ (self):