diff options
Diffstat (limited to 'src/patchsets/glibc/2.25/00_all_0020-Avoid-.symver-on-common-symbols-BZ-21666.patch')
| -rw-r--r-- | src/patchsets/glibc/2.25/00_all_0020-Avoid-.symver-on-common-symbols-BZ-21666.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/patchsets/glibc/2.25/00_all_0020-Avoid-.symver-on-common-symbols-BZ-21666.patch b/src/patchsets/glibc/2.25/00_all_0020-Avoid-.symver-on-common-symbols-BZ-21666.patch new file mode 100644 index 0000000000..81d67717c6 --- /dev/null +++ b/src/patchsets/glibc/2.25/00_all_0020-Avoid-.symver-on-common-symbols-BZ-21666.patch @@ -0,0 +1,66 @@ +https://bugs.gentoo.org/627164 + +From 388b4f1a02f3a801965028bbfcd48d905638b797 Mon Sep 17 00:00:00 2001 +From: "H.J. Lu" <hjl.tools@gmail.com> +Date: Fri, 23 Jun 2017 14:38:46 -0700 +Subject: [PATCH] Avoid .symver on common symbols [BZ #21666] + +The .symver directive on common symbol just creates a new common symbol, +not an alias and the newer assembler with the bug fix for + +https://sourceware.org/bugzilla/show_bug.cgi?id=21661 + +will issue an error. Before the fix, we got + +$ readelf -sW libc.so | grep "loc[12s]" + 5109: 00000000003a0608 8 OBJECT LOCAL DEFAULT 36 loc1 + 5188: 00000000003a0610 8 OBJECT LOCAL DEFAULT 36 loc2 + 5455: 00000000003a0618 8 OBJECT LOCAL DEFAULT 36 locs + 6575: 00000000003a05f0 8 OBJECT GLOBAL DEFAULT 36 locs@GLIBC_2.2.5 + 7156: 00000000003a05f8 8 OBJECT GLOBAL DEFAULT 36 loc1@GLIBC_2.2.5 + 7312: 00000000003a0600 8 OBJECT GLOBAL DEFAULT 36 loc2@GLIBC_2.2.5 + +in libc.so. The versioned loc1, loc2 and locs have the wrong addresses. +After the fix, we got + +$ readelf -sW libc.so | grep "loc[12s]" + 6570: 000000000039e3b8 8 OBJECT GLOBAL DEFAULT 34 locs@GLIBC_2.2.5 + 7151: 000000000039e3c8 8 OBJECT GLOBAL DEFAULT 34 loc1@GLIBC_2.2.5 + 7307: 000000000039e3c0 8 OBJECT GLOBAL DEFAULT 34 loc2@GLIBC_2.2.5 + + [BZ #21666] + * misc/regexp.c (loc1): Add __attribute__ ((nocommon)); + (loc2): Likewise. + (locs): Likewise. +--- + ChangeLog | 7 +++++++ + misc/regexp.c | 9 +++++---- + 2 files changed, 12 insertions(+), 4 deletions(-) + +diff --git a/misc/regexp.c b/misc/regexp.c +index 19d76c0c37..eaea7c3b89 100644 +--- a/misc/regexp.c ++++ b/misc/regexp.c +@@ -29,14 +29,15 @@ + + #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23) + +-/* Define the variables used for the interface. */ +-char *loc1; +-char *loc2; ++/* Define the variables used for the interface. Avoid .symver on common ++ symbol, which just creates a new common symbol, not an alias. */ ++char *loc1 __attribute__ ((nocommon)); ++char *loc2 __attribute__ ((nocommon)); + compat_symbol (libc, loc1, loc1, GLIBC_2_0); + compat_symbol (libc, loc2, loc2, GLIBC_2_0); + + /* Although we do not support the use we define this variable as well. */ +-char *locs; ++char *locs __attribute__ ((nocommon)); + compat_symbol (libc, locs, locs, GLIBC_2_0); + + +-- +2.14.1 + |