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Change __bss_start scope to local 

There was a typo in the original bug which used _bss_start instead of
__bss_start. As result, __bss_start wasn't scoped locally.
This commit is contained in:
Alexander Bokovoy 2018-07-12 15:24:36 +03:00
parent 58966617d0
commit b49cb5bbcc
2 changed files with 14 additions and 10 deletions
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18
samba-4.8.3-vscript.local.patch
View File

@ -1,4 +1,4 @@
From dd70ab4d600192336af547c32acd18dcbcb0c8b0 Mon Sep 17 00:00:00 2001
From dd9da7bc9306b95496d502589f95be0efc097fc0 Mon Sep 17 00:00:00 2001
From: Alexander Bokovoy <ab@samba.org>
Date: Thu, 12 Jul 2018 10:19:41 +0300
Subject: [PATCH] wafsamba/samba_abi: always hide ABI symbols which must be
@ -16,7 +16,7 @@ libraries and deliberately don't want to have ABI versioning control for
all of them, so the change I introduce here is to explicitly mark those
symbols that will always be added by default linker configuration with
binutils 2.31 as local. Right now these are '_end', '_edata', and
'_bss_start' symbols.
'__bss_start' symbols.
Signed-off-by: Alexander Bokovoy <ab@samba.org>
---
@ -25,7 +25,7 @@ Signed-off-by: Alexander Bokovoy <ab@samba.org>
2 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/buildtools/wafsamba/samba_abi.py b/buildtools/wafsamba/samba_abi.py
index 196b468f5b3..f3f66dd1d45 100644
index 196b468f5b3..4603e764fea 100644
--- a/buildtools/wafsamba/samba_abi.py
+++ b/buildtools/wafsamba/samba_abi.py
@@ -192,10 +192,12 @@ def abi_write_vscript(f, libname, current_version, versions, symmap, abi_match):
@ -37,7 +37,7 @@ index 196b468f5b3..f3f66dd1d45 100644
- for x in local_abi:
- f.write("\t\t%s;\n" % x[1:])
+ # Always hide symbols that must be local if exist
+ local_abi.extend(["!_end", "!_bss_start", "!_edata"])
+ local_abi.extend(["!_end", "!__bss_start", "!_edata"])
+ f.write("\tlocal:\n")
+ for x in local_abi:
+ f.write("\t\t%s;\n" % x[1:])
@ -46,7 +46,7 @@ index 196b468f5b3..f3f66dd1d45 100644
f.write("\t\t*;\n")
f.write("};\n")
diff --git a/buildtools/wafsamba/tests/test_abi.py b/buildtools/wafsamba/tests/test_abi.py
index bba78c1ba07..30c152417c7 100644
index bba78c1ba07..74892146990 100644
--- a/buildtools/wafsamba/tests/test_abi.py
+++ b/buildtools/wafsamba/tests/test_abi.py
@@ -66,6 +66,10 @@ class WriteVscriptTests(TestCase):
@ -55,7 +55,7 @@ index bba78c1ba07..30c152417c7 100644
\t\t*;
+\tlocal:
+\t\t_end;
+\t\t_bss_start;
+\t\t__bss_start;
+\t\t_edata;
};
""")
@ -66,7 +66,7 @@ index bba78c1ba07..30c152417c7 100644
\t\t*;
+\tlocal:
+\t\t_end;
+\t\t_bss_start;
+\t\t__bss_start;
+\t\t_edata;
};
""")
@ -76,7 +76,7 @@ index bba78c1ba07..30c152417c7 100644
\tlocal:
\t\texc_*;
+\t\t_end;
+\t\t_bss_start;
+\t\t__bss_start;
+\t\t_edata;
};
""")
@ -86,7 +86,7 @@ index bba78c1ba07..30c152417c7 100644
\tlocal:
\t\texc_*;
+\t\t_end;
+\t\t_bss_start;
+\t\t__bss_start;
+\t\t_edata;
\t\t*;
};

6
samba.spec
View File

@ -6,7 +6,7 @@
# ctdb is enabled by default, you can disable it with: --without clustering
%bcond_without clustering
%define main_release 4
%define main_release 4.1
%define samba_version 4.8.3
%define talloc_version 2.1.11
@ -3531,6 +3531,10 @@ fi
%endif # with_clustering_support
%changelog
* Thu Jul 12 2018 Alexander Bokovoy <abokovoy@redhat.com> - 2:4.8.3-4.1
- Scope to local __bss_start symbol (typo in a patch)
- Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1600035
* Thu Jul 12 2018 Alexander Bokovoy <abokovoy@redhat.com> - 2:4.8.3-4
- Change scope to local for symbols automatically added by upcoming binutils 2.31
- Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1600035