[Bug 1876293] Re: Broken CURL support with GDC

[Carsten Schlote]

Recompiling libcurl from sources and copying the library binaries over
the 'official' ones in /usr/libs/ also fixed the problem in the past.

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Title:
  Broken CURL support with GDC

Status in gcc-10 package in Ubuntu:
  New

Bug description:
  The GDC runtime access to the libcurl is broken. CURL operations abort
  with unexpected error codes.

  Test programm:
  ```
  import std.net.curl;
  import std.stdio;

  void main()
  {
      HTTP http = HTTP();
      auto data = get("https://acme-staging-v02.api.letsencrypt.org/directory", http);
      writeln(data);
  }
  ```
  Compile this program and run it.
  $ gdc curldownload.d -o curldownload -g
  $ ./curldownload
  std.net.curl.HTTPStatusException@/usr/lib/gcc/aarch64-linux-gnu/10/include/d/std/net/curl.d(1071): HTTP request returned status code 0 ()
  ----------------
  ??:? pure @safe bool std.exception.enforce!(bool).enforce(bool, lazy object.Throwable) [0xffff7faf82d3]
  ??:? char[] std.net.curl._basicHTTP!(char)._basicHTTP(const(char)[], const(void)[], std.net.curl.HTTP) [0xaaaad4d9384b]
  ??:? char[] std.net.curl.get!(std.net.curl.HTTP, char).get(const(char)[], std.net.curl.HTTP) [0xaaaad4d92833]
  ??:? _Dmain [0xaaaad4d9272f]
  ??:? ???[0xffff7fc808bb]
  ??:? ???[0xffff7fc80c2f]
  ??:? _d_run_main [0xffff7fc80d9f]
  ??:? main [0xaaaad4d927a3]
  ??:? __libc_start_main [0xffff7f6da08f]
  ??:? ???[0xaaaad4d92603]

  The same issue also impacts the 'dub' package. It is *not* possible to
  update/fetch packages from code.dlang.org.

  I compiled 'ldc2' from sources in its latest version. The code snippet
  works fine, when compiled with ldc- Also 'dub', when recompiled with
  ldc2, works fine.

  So there is some problem with gdc and its access to libcurl. Maybe
  broken library bindungs? Some issue with ARM32 and ARM64 archs (same
  problem with ARM32(gnueabihf))?

  Issue also reported on dlang.org :
  https://issues.dlang.org/show_bug.cgi?id=20380

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: gdc-10 10-20200411-0ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-1008.8-raspi 5.4.29
  Uname: Linux 5.4.0-1008-raspi aarch64
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: arm64
  CasperMD5CheckResult: skip
  Date: Fri May  1 12:19:49 2020
  SourcePackage: gcc-10
  UpgradeStatus: No upgrade log present (probably fresh install)

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