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authorH.J. Lu <hjl.tools@gmail.com>2017-06-23 14:38:46 -0700
committerH.J. Lu <hjl.tools@gmail.com>2017-07-19 03:39:49 -0700
commit2f919bf21329d130036d92682ec4cef390f09321 (patch)
tree4d70072e9302561cbae398dd37f1ab22e681d728 /gmon/gmon.c
parent7cdbe5b6f929b820b9dc92dbfa6ff48b4e6e133d (diff)
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Avoid .symver on common symbols [BZ #21666] hjl/pr21666/2.25
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.

(cherry picked from commit 388b4f1a02f3a801965028bbfcd48d905638b797)
Diffstat (limited to 'gmon/gmon.c')
0 files changed, 0 insertions, 0 deletions