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[Bug ld/2723] ld puts unused section symbols in symbol table
From: |
hjl at lucon dot org |
Subject: |
[Bug ld/2723] ld puts unused section symbols in symbol table |
Date: |
1 Jun 2006 16:51:37 -0000 |
------- Additional Comments From hjl at lucon dot org 2006-06-01 16:51 -------
Created an attachment (id=1061)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=1061&action=view)
A testcase
I got
address@hidden symtab-1]$ make
as -o foo.o foo.s
./ld -o foo foo.o
./objcopy foo bar
readelf -Ss foo > foo.l
readelf -Ss bar > bar.l
diff -up foo.l bar.l
--- foo.l 2006-06-01 09:50:12.000000000 -0700
+++ bar.l 2006-06-01 09:50:12.000000000 -0700
@@ -12,26 +12,23 @@ Section Headers:
[ 3] .shstrtab STRTAB 0000000000000000 000000b5
0000000000000027 0000000000000000 0 0 1
[ 4] .symtab SYMTAB 0000000000000000 00000260
- 0000000000000138 0000000000000018 5 6 8
- [ 5] .strtab STRTAB 0000000000000000 00000398
+ 00000000000000f0 0000000000000018 5 3 8
+ [ 5] .strtab STRTAB 0000000000000000 00000350
0000000000000033 0000000000000000 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings)
I (info), L (link order), G (group), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific)
-Symbol table '.symtab' contains 13 entries:
+Symbol table '.symtab' contains 10 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 00000000004000b0 0 SECTION LOCAL DEFAULT 1
2: 00000000006000b4 0 SECTION LOCAL DEFAULT 2
- 3: 0000000000000000 0 SECTION LOCAL DEFAULT 3
- 4: 0000000000000000 0 SECTION LOCAL DEFAULT 4
- 5: 0000000000000000 0 SECTION LOCAL DEFAULT 5
- 6: 00000000004000b0 0 NOTYPE GLOBAL DEFAULT 1 __start
- 7: 00000000004000b0 0 NOTYPE GLOBAL DEFAULT 1 _start
- 8: 00000000006000b5 0 NOTYPE GLOBAL DEFAULT ABS __bss_start
- 9: 00000000004000b0 0 NOTYPE GLOBAL DEFAULT 1 main
- 10: 00000000006000b5 0 NOTYPE GLOBAL DEFAULT ABS _edata
- 11: 00000000006000b8 0 NOTYPE GLOBAL DEFAULT ABS _end
- 12: 00000000004000b0 0 NOTYPE GLOBAL DEFAULT 1 start
+ 3: 00000000004000b0 0 NOTYPE GLOBAL DEFAULT 1 __start
+ 4: 00000000004000b0 0 NOTYPE GLOBAL DEFAULT 1 _start
+ 5: 00000000006000b5 0 NOTYPE GLOBAL DEFAULT ABS __bss_start
+ 6: 00000000004000b0 0 NOTYPE GLOBAL DEFAULT 1 main
+ 7: 00000000006000b5 0 NOTYPE GLOBAL DEFAULT ABS _edata
+ 8: 00000000006000b8 0 NOTYPE GLOBAL DEFAULT ABS _end
+ 9: 00000000004000b0 0 NOTYPE GLOBAL DEFAULT 1 start
make: *** [all] Error 1
address@hidden symtab-1]$
--
http://sourceware.org/bugzilla/show_bug.cgi?id=2723
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