https://sourceware.org/bugzilla/show_bug.cgi?id=32860
Bug ID: 32860
Summary: Definition in the archive is ignored with LTO
Product: binutils
Version: 2.45 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
[hjl@gnu-tgl-3 lto-6]$ cat pr31482a.c
#include <stdlib.h>
int
main()
{
abort ();
return 0;
}
[hjl@gnu-tgl-3 lto-6]$ cat pr31482c.c
#include <stdlib.h>
#include <stdio.h>
void
abort (void)
{
printf ("PASS1\n");
exit (0);
}
[hjl@gnu-tgl-3 lto-6]$ make
gcc -B./ -O2 -flto -fno-fat-lto-objects -c -o pr31482a.o pr31482a.c
gcc -B./ -O2 -flto -fno-fat-lto-objects -c -o pr31482c.o pr31482c.c
ar -rv libstatic.a pr31482c.o
ar: creating libstatic.a
a - pr31482c.o
gcc -B./ -O2 -flto -fno-fat-lto-objects -Wl,--as-needed -o x pr31482a.o
libstatic.a
./x
make: *** [Makefile:11: all] Aborted (core dumped)
rm pr31482c.o
[hjl@gnu-tgl-3 lto-6]$
There is no reference to abort in pr31482a.o IR since abort is a builtin
function.
But the second LTO scan doesn't pick up abort in libstatic.a.
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