[Bug ld/29086] New: -Wl,--wrap=foo with LTO leads to undefined symbol

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29086

            Bug ID: 29086
           Summary: -Wl,--wrap=foo with LTO leads to undefined symbol
           Product: binutils
           Version: unspecified
            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-cfl-1 xxx]$ cat x.c 
int
foo (void)
{
  return 0;
} 

int
main()
{
  return foo ();
} 
[hjl@gnu-cfl-1 xxx]$ cat y.c 
extern int __real_foo (void);

int
__wrap_foo (void)
{
  return __real_foo ();
}
[hjl@gnu-cfl-1 xxx]$ make
gcc -g -flto   -c -o x.o x.c
gcc -Wl,--wrap=foo -g -flto -o x x.o y.o
/usr/local/bin/ld: /tmp/ccaI3Pxt.ltrans0.ltrans.o: in function `__wrap_foo':
/export/home/hjl/bugs/binutils/xxx/y.c:6: undefined reference to `foo'
collect2: error: ld returned 1 exit status
make: *** [Makefile:11: x] Error 1
[hjl@gnu-cfl-1 xxx]$

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