blob: e42f0195614f890a516580b5017c94ccdb8d6807 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
# Ensure that this bug is not present in the C++ toolchain we are using.
#
# URL for bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80431
#
# The test program is from that issue, with only a slight modification
# to set an exit status instead of printing strings.
AC_DEFUN([ENSURE_NO_GCC_BUG_80431],
[
AC_MSG_CHECKING([that GCC bug 80431 is fixed])
AC_LANG_PUSH(C++)
AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <cstdio>
static bool a = true;
static bool b = true;
struct Options { };
struct Option
{
Option(Options * options)
{
a = false;
}
~Option()
{
b = false;
}
};
struct MyOptions : Options { };
struct MyOptions2 : virtual MyOptions
{
Option foo{this};
};
]],
[[
{
MyOptions2 opts;
}
return (a << 1) | b;
]])],
[status_80431=0],
[status_80431=$?],
[
# Assume we're bug-free when cross-compiling
])
AC_LANG_POP(C++)
AS_CASE([$status_80431],
[0],[
AC_MSG_RESULT(yes)
],
[2],[
AC_MSG_RESULT(no)
AC_MSG_ERROR(Cannot build Nix with C++ compiler with this bug)
],
[
AC_MSG_RESULT(unexpected result $status_80431: not expected failure with bug, ignoring)
])
])
|
