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65 lines
1.4 KiB
Text
65 lines
1.4 KiB
Text
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# Ensure that this bug is not present in the C++ toolchain we are using.
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#
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# URL for bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80431
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#
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# The test program is from that issue, with only a slight modification
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# to set an exit status instead of printing strings.
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AC_DEFUN([ENSURE_NO_GCC_BUG_80431],
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[
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AC_MSG_CHECKING([that GCC bug 80431 is fixed])
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AC_LANG_PUSH(C++)
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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#include <cstdio>
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static bool a = true;
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static bool b = true;
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struct Options { };
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struct Option
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{
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Option(Options * options)
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{
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a = false;
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}
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~Option()
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{
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b = false;
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}
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};
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struct MyOptions : Options { };
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struct MyOptions2 : virtual MyOptions
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{
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Option foo{this};
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};
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]],
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[[
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{
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MyOptions2 opts;
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}
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return (a << 1) | b;
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]])],
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[status_80431=0],
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[status_80431=$?],
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[
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# Assume we're bug-free when cross-compiling
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])
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AC_LANG_POP(C++)
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AS_CASE([$status_80431],
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[0],[
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AC_MSG_RESULT(yes)
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],
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[2],[
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AC_MSG_RESULT(no)
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AC_MSG_ERROR(Cannot build Nix with C++ compiler with this bug)
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],
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[
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AC_MSG_RESULT(unexpected result $status_80431: not expected failure with bug, ignoring)
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])
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])
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