96/118: fix disappearing bash arguments

[Ludovic Court�s]

civodul pushed a commit to branch nix
in repository guix.

commit 8c766e48d5c4741b63a4f24dc91138f587c04a5a
Author: Joel Taylor <m...@joelt.io>
Date:   Thu Aug 21 14:06:49 2014 -0700

    fix disappearing bash arguments
---
 nix/libstore/build.cc |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/nix/libstore/build.cc b/nix/libstore/build.cc
index b848b8c..5c605a7 100644
--- a/nix/libstore/build.cc
+++ b/nix/libstore/build.cc
@@ -2163,8 +2163,13 @@ void DerivationGoal::initChild()
         /* Fill in the arguments. */
         string builderBasename = baseNameOf(drv.builder);
         args.push_back(builderBasename.c_str());
-        foreach (Strings::iterator, i, drv.args)
-            args.push_back(rewriteHashes(*i, rewritesToTmp).c_str());
+        foreach (Strings::iterator, i, drv.args) {
+            auto re = rewriteHashes(*i, rewritesToTmp);
+            auto cstr = new char[re.length()+1];
+            std::strcpy(cstr, re.c_str());
+
+            args.push_back(cstr);
+        }
         args.push_back(0);
 
         restoreSIGPIPE();