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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r13-3684] libstdc++: Define _GNU_SOURCE for secure_getenv on Cygwin [PR107511] Date: Fri, 4 Nov 2022 14:05:50 +0000 (GMT) [thread overview] Message-ID: <20221104140550.60D60381D455@sourceware.org> (raw) https://gcc.gnu.org/g:f505f37a8e5a7646af4038b5c46f72d8a05dc7f0 commit r13-3684-gf505f37a8e5a7646af4038b5c46f72d8a05dc7f0 Author: Jonathan Wakely <jwakely@redhat.com> Date: Thu Nov 3 11:44:47 2022 +0000 libstdc++: Define _GNU_SOURCE for secure_getenv on Cygwin [PR107511] As in r12-6867-ge20486d508afdf we need to define _GNU_SOURCE explicitly for Cygwin, because configure finds it in libc but it isn't declared unless we request it. libstdc++-v3/ChangeLog: PR libstdc++/107511 * libsupc++/eh_alloc.cc (_GNU_SOURCE): Define. Diff: --- libstdc++-v3/libsupc++/eh_alloc.cc | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libstdc++-v3/libsupc++/eh_alloc.cc b/libstdc++-v3/libsupc++/eh_alloc.cc index e93f14c887b..83d15f39ca4 100644 --- a/libstdc++-v3/libsupc++/eh_alloc.cc +++ b/libstdc++-v3/libsupc++/eh_alloc.cc @@ -25,6 +25,11 @@ // This is derived from the C++ ABI for IA-64. Where we diverge // for cross-architecture compatibility are noted with "@@@". +#ifndef _GNU_SOURCE +// Cygwin needs this for secure_getenv +# define _GNU_SOURCE 1 +#endif + #include <exception> // std::exception #include <new> // std::terminate #include <cstdlib> // std::malloc, std::free, std::strtoul
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