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From e7d17e71cdc10a2e81e454ce3b9637f1b2a587f2 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Thu, 10 Jul 2014 01:47:33 +0400
Subject: [PATCH] Fix xtensa ld segfault when linking linux modules
is_inconsistent_linkonce_section makes an assumption that section name
that starts with ".gnu.linkonce.prop." has one more dot in its suffix.
However gas generates such section name by insertion of "prop." right
after ".gnu.linkonce." part of the name of the original section. So, for
section named ".gnu.linkonce.this_module" corresponding property section
name does not satisfy the assumption. Such section names are common in
linux modules. This bug was exposed by the patch "a35d5e8 Fix alignment
for the first section frag on xtensa", that makes gas produce property
section for each section that has ".align" directive in it.
Use suffix that immediately follows ".gnu.linkonce.prop." when there are
no more dots following it.
2014-07-10 Max Filippov <jcmvbkbc@gmail.com>
ld/
* emultempl/xtensaelf.em (is_inconsistent_linkonce_section):
correctly handle missing dot in section name after
".gnu.linkonce.prop.".
---
Backported from: e7d17e71cdc10a2e81e454ce3b9637f1b2a587f2
Changes to ld/ChangeLog file are dropped.
ld/emultempl/xtensaelf.em | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ld/emultempl/xtensaelf.em b/ld/emultempl/xtensaelf.em
index 151eea4..948d18d 100644
--- a/ld/emultempl/xtensaelf.em
+++ b/ld/emultempl/xtensaelf.em
@@ -1310,7 +1310,7 @@ is_inconsistent_linkonce_section (asection *sec)
for Tensilica's XCC compiler. */
name = sec_name + linkonce_len;
if (CONST_STRNEQ (name, "prop."))
- name = strchr (name + 5, '.') + 1;
+ name = strchr (name + 5, '.') ? strchr (name + 5, '.') + 1 : name + 5;
else if (name[1] == '.'
&& (name[0] == 'p' || name[0] == 'e' || name[0] == 'h'))
name += 2;
--
1.8.1.4
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