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From: Kyle Evans <kevans@FreeBSD.org>
Date: Mon, 19 Oct 2020 20:32:18 +0000 (UTC)
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Subject: svn commit: r552764 - in head/devel/llvm10: . files
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Author: kevans
Date: Mon Oct 19 20:32:17 2020
New Revision: 552764
URL: https://svnweb.freebsd.org/changeset/ports/552764
Log:
devel/llvm10: fix hand-rolled AT_EXECPATH search for older FreeBSD
This was committed in base r360875 and upstream 21e5e1724, which was after
LLVM10 branched and has not been backported.
This failure would only have been noticed if AT_EXECPATH was missing, and
qemu-user-static does not currently provide AT_EXECPATH. As such, any
execution of llvm10 binaries under qemu-user-static immediately segfaulted.
Reported by: Daniel Tihanyi <daniel.tihanyi@tetragir.com>, jbeich
Approved by: brooks (maintainer)
MFH: 2020Q4
Added:
head/devel/llvm10/files/patch-lib_Support_Unix_Path.inc (contents, props changed)
Modified:
head/devel/llvm10/Makefile
Modified: head/devel/llvm10/Makefile
==============================================================================
--- head/devel/llvm10/Makefile Mon Oct 19 19:42:40 2020 (r552763)
+++ head/devel/llvm10/Makefile Mon Oct 19 20:32:17 2020 (r552764)
@@ -2,7 +2,7 @@
PORTNAME= llvm
DISTVERSION= 10.0.1
-PORTREVISION= 1
+PORTREVISION= 2
CATEGORIES= devel lang
MASTER_SITES= https://github.com/llvm/llvm-project/releases/download/llvmorg-${DISTVERSION:S/rc/-rc/}/ \
https://${PRE_}releases.llvm.org/${LLVM_RELEASE}/${RCDIR}
Added: head/devel/llvm10/files/patch-lib_Support_Unix_Path.inc
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/devel/llvm10/files/patch-lib_Support_Unix_Path.inc Mon Oct 19 20:32:17 2020 (r552764)
@@ -0,0 +1,19 @@
+--- lib/Support/Unix/Path.inc.orig 2020-10-19 17:56:15 UTC
++++ lib/Support/Unix/Path.inc
+@@ -208,14 +208,9 @@ std::string getMainExecutable(const char *argv0, void
+ while (*p++ != 0)
+ ;
+ // Iterate through auxiliary vectors for AT_EXECPATH.
+- for (;;) {
+- switch (*(uintptr_t *)p++) {
+- case AT_EXECPATH:
++ for (; (uintptr_t *)p != AT_NULL; p++) {
++ if (*(uintptr_t *)p++ == AT_EXECPATH);
+ return *p;
+- case AT_NULL:
+- break;
+- }
+- p++;
+ }
+ #endif
+ // Fall back to argv[0] if auxiliary vectors are not available.