compiler-rt-netbsd: Plug dlerror() leak

[Kamil Rytarowski <n54%gmx.com@localhost>]

Module Name:	pkgsrc-wip
Committed By:	Kamil Rytarowski <n54%gmx.com@localhost>
Pushed By:	kamil
Date:		Thu Nov 23 07:44:25 2017 +0100
Changeset:	f2e7c8cdcafb3e75ef5facfe927d2e14dce147ac

Modified Files:
	compiler-rt-netbsd/distinfo
Added Files:
	compiler-rt-netbsd/patches/patch-lib_sanitizer__common_sanitizer__symbolizer__posix__libcdep.cc

Log Message:
compiler-rt-netbsd: Plug dlerror() leak

https://reviews.llvm.org/D40382

Sponsored by <The NetBSD Foundation>

To see a diff of this commit:
https://wip.pkgsrc.org/cgi-bin/gitweb.cgi?p=pkgsrc-wip.git;a=commitdiff;h=f2e7c8cdcafb3e75ef5facfe927d2e14dce147ac

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

diffstat:
 compiler-rt-netbsd/distinfo                                  |  1 +
 ...anitizer__common_sanitizer__symbolizer__posix__libcdep.cc | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diffs:
diff --git a/compiler-rt-netbsd/distinfo b/compiler-rt-netbsd/distinfo
index 672dc14462..9c9707ac20 100644
--- a/compiler-rt-netbsd/distinfo
+++ b/compiler-rt-netbsd/distinfo
@@ -7,6 +7,7 @@ SHA1 (patch-lib_lsan_lsan__thread.cc) = 5cfc982f13ad8171fcd2859f2e37edef2f0e41b2
 SHA1 (patch-lib_lsan_lsan__thread.h) = 5fbcc7fe73e619d88912413d99af2f4878ffeae6
 SHA1 (patch-lib_msan_msan.h) = ce3f544490aebc1db73be9e3388f0a9d31d5b369
 SHA1 (patch-lib_sanitizer__common_sanitizer__signal__interceptors.inc) = 30b8f64a9cb4362032d2d8fa936aef49c1c747de
+SHA1 (patch-lib_sanitizer__common_sanitizer__symbolizer__posix__libcdep.cc) = 65914439de83efc75bb4191219f85f92c72f0959
 SHA1 (patch-lib_sanitizer__common_sanitizer__thread__registry.cc) = 38be2aa0785c5a17e682f36717fae45cf8596fbe
 SHA1 (patch-lib_sanitizer__common_sanitizer__thread__registry.h) = 8b6ab550a34b4e8526a18e45ef6fc05af64e4c2a
 SHA1 (patch-lib_tsan_rtl_tsan__interceptors.cc) = 6a17ddeb59952b4f15cbe2613b76a129659f52cc
diff --git a/compiler-rt-netbsd/patches/patch-lib_sanitizer__common_sanitizer__symbolizer__posix__libcdep.cc b/compiler-rt-netbsd/patches/patch-lib_sanitizer__common_sanitizer__symbolizer__posix__libcdep.cc
new file mode 100644
index 0000000000..d1610f349c
--- /dev/null
+++ b/compiler-rt-netbsd/patches/patch-lib_sanitizer__common_sanitizer__symbolizer__posix__libcdep.cc
@@ -0,0 +1,12 @@
+$NetBSD$
+
+--- lib/sanitizer_common/sanitizer_symbolizer_posix_libcdep.cc.orig	2017-10-17 18:35:46.000000000 +0000
++++ lib/sanitizer_common/sanitizer_symbolizer_posix_libcdep.cc
+@@ -77,6 +77,7 @@ static swift_demangle_ft swift_demangle_
+ // symbolication.
+ static void InitializeSwiftDemangler() {
+   swift_demangle_f = (swift_demangle_ft)dlsym(RTLD_DEFAULT, "swift_demangle");
++  (void)dlerror(); // Cleanup error message in case of failure
+ }
+ 
+ // Attempts to demangle a Swift name. The demangler will return nullptr if a