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#!/usr/bin/env python -b
# Ripped from HP and updated from Debian
# Update by Gentoo to support unicode output
#
# Copyright (c) 2004 Hewlett-Packard Development Company, L.P.
# David Mosberger <davidm@hpl.hp.com>
#
# Scan standard input for GCC warning messages that are likely to
# source of real 64-bit problems. In particular, see whether there
# are any implicitly declared functions whose return values are later
# interpreted as pointers. Those are almost guaranteed to cause
# crashes.
#
import re
import sys
implicit_pattern = re.compile(
r"([^:]*):(\d+): warning: implicit declaration " + "of function [`']([^']*)'"
)
pointer_pattern = (
r"([^:]*):(\d+): warning: "
+ r"("
+ r"(assignment"
+ r"|initialization"
+ r"|return"
+ r"|passing arg \d+ of `[^']*'"
+ r"|passing arg \d+ of pointer to function"
+ r") makes pointer from integer without a cast"
+ r"|"
+ r"cast to pointer from integer of different size)"
)
unicode_quote_open = "\u2018"
unicode_quote_close = "\u2019"
def write(msg):
sys.stdout.buffer.write(msg.encode("utf_8", "backslashreplace"))
pointer_pattern = re.compile(pointer_pattern)
last_implicit_filename = ""
last_implicit_linenum = -1
last_implicit_func = ""
while True:
line = sys.stdin.buffer.readline().decode("utf_8", "replace")
if not line:
break
# translate unicode open/close quotes to ascii ones
line = line.replace(unicode_quote_open, "`")
line = line.replace(unicode_quote_close, "'")
m = implicit_pattern.match(line)
if m:
last_implicit_filename = m.group(1)
last_implicit_linenum = int(m.group(2))
last_implicit_func = m.group(3)
else:
m = pointer_pattern.match(line)
if m:
pointer_filename = m.group(1)
pointer_linenum = int(m.group(2))
if (
last_implicit_filename == pointer_filename
and last_implicit_linenum == pointer_linenum
):
write(
"Function `%s' implicitly converted to pointer at "
"%s:%d\n"
% (
last_implicit_func,
last_implicit_filename,
last_implicit_linenum,
)
)
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