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#70935
Support C++17 compilers in the C++ tests
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(Tue, 14 May 2024 12:06:01 GMT)
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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
[Message part 1 (text/plain, inline)]
Hi,
Running the libtool tests on Ubuntu 22.04, I saw this test output:
Constructors.
142: C++ static constructors ok
143: C++ exception handling skipped (exceptions.at:361)
It sounds odd that a C++ test gets skipped when a perfectly fine C++ compiler
is present. So I investigated...
The log file of the respective test is:
--------------------------------------------------------------------------------
# -*- compilation -*-
143. exceptions.at:24: testing C++ exception handling ...
./exceptions.at:33: case $LIBLTDL in #(
*/_inst/lib/*) test -f "$LIBLTDL" || (exit 77) ;;
esac
stdout:
./exceptions.at:361: $CXX $CPPFLAGS $CXXFLAGS -DUSING_COMMON_DLL -DUSING_MODULE_DLL -DUSING_LIB_DLL -c main.cpp || exit 77
stderr:
In file included from main.cpp:7:
lib.h:30:26: error: ISO C++17 does not allow dynamic exception specifications
30 | int LIB_IMPEXP libfoo () throw (libexc);
| ^~~~~
In file included from main.cpp:8:
module.h:17:40: error: ISO C++17 does not allow dynamic exception specifications
17 | extern "C" int MODULE_IMPEXP modfoo () throw (modexc);
| ^~~~~
main.cpp:22:16: error: ISO C++17 does not allow dynamic exception specifications
22 | int foo (void) throw (exc)
| ^~~~~
stdout:
143. exceptions.at:24: 143. C++ exception handling (exceptions.at:24): skipped (exceptions.at:361)
--------------------------------------------------------------------------------
The problem is apparently that the test uses old syntax that was deprecated
in C++11 and removed in C++17 [1]. The new syntax is described in [2].
The attached patch fixes it.
[1] https://en.cppreference.com/w/cpp/language/except_spec
[2] https://en.cppreference.com/w/cpp/language/noexcept_spec
[0001-Support-C-17-compilers-in-the-C-tests.patch (text/x-patch, attachment)]
This bug report was last modified 26 days ago.
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