forked from Imagelibrary/binutils-gdb
3221c470f0
Call unwrap_hash_lookup to restore the wrapper symbol check for standard
function since reference to standard function may not show up in LTO
symbol table:
[hjl@gnu-tgl-3 pr31956-3]$ nm foo.o
00000000 T main
U __real_malloc
00000000 T __wrap_malloc
[hjl@gnu-tgl-3 pr31956-3]$ lto-dump -list foo.o
Type Visibility Size Name
function default 0 malloc
function default 0 __real_malloc
function default 3 main
function default 5 __wrap_malloc
[hjl@gnu-tgl-3 pr31956-3]$ make
gcc -O2 -flto -Wall -c -o foo.o foo.c
gcc -Wl,--wrap=malloc -O2 -flto -Wall -o x foo.o
/usr/local/bin/ld: /tmp/ccsPW0a9.ltrans0.ltrans.o: in function `main':
<artificial>:(.text.startup+0xa): undefined reference to `__wrap_malloc'
collect2: error: ld returned 1 exit status
make: *** [Makefile:22: x] Error 1
[hjl@gnu-tgl-3 pr31956-3]$
Also add a test to verify that the unused wrapper is removed.
PR ld/31956
* plugin.c (get_symbols): Restore the wrapper symbol check for
standard function.
* testsuite/ld-plugin/lto.exp: Run the malloc test and the
unused test.
* testsuite/ld-plugin/pr31956c.c: New file.
* testsuite/ld-plugin/pr31956d.c: New file.
* testsuite/ld-plugin/pr31956d.d: New file.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
5 lines
43 B
Makefile
5 lines
43 B
Makefile
#failif
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#...
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[0-9a-f]+ T .*parse_line
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#...
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