qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-19 14:54:43 -07:00
Code Releases Activity

fix divide by zero in old glibc dynamic loader

Browse Source 
R=r
CC=iant
http://go/go-review/1018024
This commit is contained in:
Russ Cox 2009-11-02 14:00:32 -08:00
parent 74a52ee75f
commit 6334b499e8
1 changed files with 11 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
src/cmd/8l/asm.c
View File

@ -307,14 +307,21 @@ doelf(void)
/*
* hash table - empty for now.
* we should have to fill it out with an entry for every
* symbol in .dynsym, but it seems to work not to,
* which is fine with me.
* only entries that other objects need to find when
* linking us need to be in this table. right now that
* is no entries.
*
* must have at least 1 bucket, though, to avoid
* a divide by zero bug in some copies of the
* glibc dynamic loader.
*/
s = lookup(".hash", 0);
s->type = SDATA; // TODO: rodata
s->reachable = 1;
s->value += 8; // two leading zeros
adduint32(s, 1); // nbucket
adduint32(s, 1); // nchain
adduint32(s, 0); // bucket[0]
adduint32(s, 0); // chain[0]
/* dynamic symbol table - first entry all zeros */
s = lookup(".dynsym", 0);