This fixes <https://sourceware.org/bugzilla/show_bug.cgi?id=18781>
whereby, on 32-bit platforms, libc 2.22 would fail to pass O_LARGEFILE
to 'openat'.  This was caught by 'tests/sparse03.at' in the tar
test suite.

commit eb32b0d40308166c4d8f6330cc2958cb1e545075
Author: Andreas Schwab <schwab@suse.de>
Date:   Mon Aug 10 14:12:47 2015 +0200

    Readd O_LARGEFILE flag for openat64 (bug 18781)

--- a/sysdeps/unix/sysv/linux/openat.c
+++ b/sysdeps/unix/sysv/linux/openat.c
@@ -68,6 +68,11 @@ __OPENAT (int fd, const char *file, int oflag, ...)
       va_end (arg);
     }
 
+  /* We have to add the O_LARGEFILE flag for openat64.  */
+#ifdef MORE_OFLAGS
+  oflag |= MORE_OFLAGS;
+#endif
+
   return SYSCALL_CANCEL (openat, fd, file, oflag, mode);
 }
 libc_hidden_def (__OPENAT)
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<tr><th>author</th><td>Ricardo Wurmus &lt;rekado@elephly.net&gt;</td><td class='right'>2019-03-26 21:35:46 +0100</td></tr>
<tr><th>committer</th><td>Ricardo Wurmus &lt;rekado@elephly.net&gt;</td><td class='right'>2019-03-26 23:13:54 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/guix/commit/gnu/packages/engineering.scm?id=68631e037bd79039b5b14150e01f64cd8f81eabb'>68631e037bd79039b5b14150e01f64cd8f81eabb</a> (<a href='/guix/patch/gnu/packages/engineering.scm?id=68631e037bd79039b5b14150e01f64cd8f81eabb'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/guix/commit/gnu/packages/engineering.scm?id=4b81d5c4bc442a12c681586f6c25a4ca0af44056'>4b81d5c4bc442a12c681586f6c25a4ca0af44056</a> (<a href='/guix/diff/gnu/packages/engineering.scm?id=68631e037bd79039b5b14150e01f64cd8f81eabb&amp;id2=4b81d5c4bc442a12c681586f6c25a4ca0af44056'>diff</a>)</td></tr><tr><th>download</th><td colspan='2' class='oid'><a href='/guix/snapshot/guix-68631e037bd79039b5b14150e01f64cd8f81eabb.tar.gz'>guix-68631e037bd79039b5b14150e01f64cd8f81eabb.tar.gz</a><br/><a href='/guix/snapshot/guix-68631e037bd79039b5b14150e01f64cd8f81eabb.zip'>guix-68631e037bd79039b5b14150e01f64cd8f81eabb.zip</a><br/></td></tr></table>
<div class='commit-subject'>gnu: ldc: Use INVOKE.</div><div class='commit-msg'>* gnu/packages/dlang.scm (ldc)[arguments]: Use INVOKE.
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