In the following example symbol _start should have been reported as duplicate as
there are two instances of it. But ld does not report this error and the _start
symbol defined in duplicate.o file is overridden.
example
Sampel application "duplicate.c":
extern int dummy(void)
{
volatile int i;
/* create some .text data to move _start away from the beginning */
for(i = 0; i < 100; i++)
;
return i;
}
extern void _start(void)
{
volatile int *p = (volatile int*)0xbf0c0000;
*p = dummy();
}
Linker script "duplicate-ld":
SECTIONS
{
.text 0x00000000:
{
_start = . ;
*(.text)
}
}
How to reproduce
gcc -c -o duplicate.o duplicate.c
ld -o duplicate -T duplicate-ld duplicate.o
--
Summary: ld does not report duplicate symbols defined in script
file
Product: binutils
Version: 2.17 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: raj dot khem at gmail dot com
CC: bug-binutils at gnu dot org,hjl at lucon dot org
GCC build triplet: i386-redhat-linux
GCC host triplet: i386-redhat-linux
GCC target triplet: i386-redhat-linux
http://sourceware.org/bugzilla/show_bug.cgi?id=2300
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