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authorMark H Weaver <mhw@netris.org>2017-08-06 00:23:20 -0400
committerMark H Weaver <mhw@netris.org>2017-08-06 00:23:20 -0400
commitf167595ba1a4e0e419adc17de6af275bedf32822 (patch)
tree6a582fbda8ad9d72962359add99e5ae219dd030d /nix
parente3df6938acc2ba2d2f7333d911b8bdc3697f0f75 (diff)
parent01a61d7040b1794f36547b107abce6e967d59f21 (diff)
downloadguix-f167595ba1a4e0e419adc17de6af275bedf32822.tar.gz
Merge branch 'master' into core-updates
Diffstat (limited to 'nix')
-rw-r--r--nix/libstore/build.cc11
1 files changed, 5 insertions, 6 deletions
diff --git a/nix/libstore/build.cc b/nix/libstore/build.cc
index a93095dd1e..693fa70c8d 100644
--- a/nix/libstore/build.cc
+++ b/nix/libstore/build.cc
@@ -26,7 +26,6 @@
 #include <errno.h>
 #include <stdio.h>
 #include <cstring>
-#include <stdint.h>
 
 #include <pwd.h>
 #include <grp.h>
@@ -2009,11 +2008,11 @@ void DerivationGoal::startBuilder()
 	char stack[32 * 1024];
 	int flags = CLONE_NEWPID | CLONE_NEWNS | CLONE_NEWIPC | CLONE_NEWUTS | SIGCHLD;
 	if (!fixedOutput) flags |= CLONE_NEWNET;
-
-	/* Ensure proper alignment on the stack.  On aarch64, it has to be 16
-	   bytes.  */
-	pid = clone(childEntry, (char *)(((uintptr_t)stack + 16) & ~0xf),
-		    flags, this);
+#ifdef __aarch64__
+	    pid = clone(childEntry, stack + sizeof(stack) - 16, flags, this);
+#else
+	    pid = clone(childEntry, stack + sizeof(stack) - 8, flags, this);
+#endif
 	if (pid == -1)
 	    throw SysError("cloning builder process");
     } else