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binutils/SOURCES/binutils-plugin-as-needed-2...

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diff -rup binutils.orig/bfd/elflink.c binutils-2.30/bfd/elflink.c
--- binutils.orig/bfd/elflink.c 2021-03-18 14:33:03.462295923 +0000
+++ binutils-2.30/bfd/elflink.c 2021-03-18 14:37:34.110465450 +0000
@@ -4661,7 +4661,10 @@ error_free_dyn:
object and a shared object. */
bfd_boolean dynsym = FALSE;
- if (! dynamic)
+ /* Plugin symbols aren't normal. Don't set def/ref flags. */
+ if ((abfd->flags & BFD_PLUGIN) != 0)
+ ;
+ else if (!dynamic)
{
if (! definition)
{
@@ -4678,14 +4681,6 @@ error_free_dyn:
h->ref_dynamic = 1;
}
}
-
- /* If the indirect symbol has been forced local, don't
- make the real symbol dynamic. */
- if ((h == hi || !hi->forced_local)
- && (bfd_link_dll (info)
- || h->def_dynamic
- || h->ref_dynamic))
- dynsym = TRUE;
}
else
{
@@ -4699,14 +4694,25 @@ error_free_dyn:
h->def_dynamic = 1;
hi->def_dynamic = 1;
}
+ }
- /* If the indirect symbol has been forced local, don't
- make the real symbol dynamic. */
- if ((h == hi || !hi->forced_local)
- && (h->def_regular
- || h->ref_regular
- || (h->is_weakalias
- && weakdef (h)->dynindx != -1)))
+ /* If an indirect symbol has been forced local, don't
+ make the real symbol dynamic. */
+ if (h != hi && hi->forced_local)
+ ;
+ else if (!dynamic)
+ {
+ if (bfd_link_dll (info)
+ || h->def_dynamic
+ || h->ref_dynamic)
+ dynsym = TRUE;
+ }
+ else
+ {
+ if (h->def_regular
+ || h->ref_regular
+ || (h->is_weakalias
+ && weakdef (h)->dynindx != -1))
dynsym = TRUE;
}
@@ -4841,6 +4847,10 @@ error_free_dyn:
&& !bfd_link_relocatable (info))
dynsym = FALSE;
+ /* Nor should we make plugin symbols dynamic. */
+ if ((abfd->flags & BFD_PLUGIN) != 0)
+ dynsym = FALSE;
+
if (definition)
{
h->target_internal = isym->st_target_internal;
@@ -4866,8 +4876,8 @@ error_free_dyn:
nondeflt_vers[nondeflt_vers_cnt++] = h;
}
}
-
- if (dynsym && (abfd->flags & BFD_PLUGIN) == 0 && h->dynindx == -1)
+
+ if (dynsym && h->dynindx == -1)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
goto error_free_vers;
@@ -4897,9 +4907,10 @@ error_free_dyn:
&& matched
&& definition
&& ((dynsym
- && h->ref_regular_nonweak
- && (old_bfd == NULL
- || (old_bfd->flags & BFD_PLUGIN) == 0))
+ && h->ref_regular_nonweak)
+ || (old_bfd != NULL
+ && (old_bfd->flags & BFD_PLUGIN) != 0
+ && bind != STB_WEAK)
|| (h->ref_dynamic_nonweak
&& (elf_dyn_lib_class (abfd) & DYN_AS_NEEDED) != 0
&& !on_needed_list (elf_dt_name (abfd),
Only in binutils-2.30/ld/testsuite/ld-plugin: lto-19.h
Only in binutils-2.30/ld/testsuite/ld-plugin: lto-19a.c
Only in binutils-2.30/ld/testsuite/ld-plugin: lto-19b.c
Only in binutils-2.30/ld/testsuite/ld-plugin: lto-19c.c
diff -rup binutils.orig/ld/testsuite/ld-plugin/lto.exp binutils-2.30/ld/testsuite/ld-plugin/lto.exp
--- binutils.orig/ld/testsuite/ld-plugin/lto.exp 2021-03-18 14:33:02.366303344 +0000
+++ binutils-2.30/ld/testsuite/ld-plugin/lto.exp 2021-03-18 14:41:51.419725611 +0000
@@ -133,7 +133,16 @@ set lto_link_tests [list \
{lto-15a.c} {} ""] \
[list "Build liblto-15.a" \
"$plug_opt" "-flto" \
- {lto-15b.c} {} "liblto-15.a"] \
+ {lto-15b.c} {} "liblto-15.a"] \
+ [list {liblto-19.a} \
+ "$plug_opt" {-flto -O2 -fPIC} \
+ {lto-19a.c} {} {liblto-19.a}] \
+ [list {compile lto-19b.c} \
+ "$plug_opt" {-flto -O2 -fPIC} \
+ {lto-19b.c} {} {} {c}] \
+ [list {liblto-19.so} \
+ {-shared tmpdir/lto-19b.o tmpdir/liblto-19.a} {-O2 -fPIC} \
+ {dummy.c} {} {liblto-19.so}] \
[list "PR ld/12696" \
"-O2 -flto -fuse-linker-plugin -r -nostdlib" "-O2 -flto" \
{pr12696-1.cc} {} "pr12696-1r.o" "c++"] \
@@ -244,6 +253,9 @@ set lto_link_tests [list \
{dummy.c} \
{{error_output "pr26267.err"}} \
"pr26267b"] \
+ [list {pr26806.so} \
+ {-shared} {-fpic -O2 -flto} \
+ {pr26806.c} {{nm {-D} pr26806.d}} {pr26806.so}] \
]
if { [at_least_gcc_version 4 7] } {
@@ -438,6 +450,10 @@ set lto_run_elf_shared_tests [list \
[list {pr22220b} \
{-flto -fuse-linker-plugin -Wl,--no-as-needed tmpdir/pr22220lib.so tmpdir/pr22220main.o} {} \
{dummy.c} {pr22220b.exe} {pass.out} {} {c++}] \
+ [list {lto-19} \
+ {-Wl,--as-needed,-R,tmpdir} {} \
+ {lto-19a.c lto-19b.c lto-19c.c} {lto-19.exe} {pass.out} {-flto -O2} {c} {} \
+ {tmpdir/liblto-19.so tmpdir/liblto-19.a}] \
]
# LTO run-time tests for ELF
Only in binutils-2.30/ld/testsuite/ld-plugin: pr26806.c
Only in binutils-2.30/ld/testsuite/ld-plugin: pr26806.d
--- /dev/null 2021-03-18 09:46:54.398732368 +0000
+++ binutils-2.30/ld/testsuite/ld-plugin/lto-19.h 2021-03-18 14:38:53.903925902 +0000
@@ -0,0 +1,6 @@
+struct re_dfa_t {
+ const int *sb_char;
+};
+struct re_dfa_t *xregcomp (void);
+struct re_dfa_t *rpl_regcomp (void);
+void rpl_regfree (struct re_dfa_t *);
--- /dev/null 2021-03-18 09:46:54.398732368 +0000
+++ binutils-2.30/ld/testsuite/ld-plugin/lto-19a.c 2021-03-18 14:38:53.903925902 +0000
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "lto-19.h"
+
+static const int utf8_sb_map[4] = { 0x12, 0x34, 0x56, 0x78 };
+
+struct re_dfa_t *
+rpl_regcomp ()
+{
+ struct re_dfa_t *dfa = malloc (sizeof (struct re_dfa_t));
+ dfa->sb_char = utf8_sb_map;
+ return dfa;
+}
+
+void
+rpl_regfree (struct re_dfa_t *dfa)
+{
+ puts (dfa->sb_char == utf8_sb_map ? "PASS" : "FAIL");
+}
--- /dev/null 2021-03-18 09:46:54.398732368 +0000
+++ binutils-2.30/ld/testsuite/ld-plugin/lto-19b.c 2021-03-18 14:38:53.903925902 +0000
@@ -0,0 +1,7 @@
+#include "lto-19.h"
+
+struct re_dfa_t *
+xregcomp (void)
+{
+ return rpl_regcomp ();
+}
--- /dev/null 2021-03-18 09:46:54.398732368 +0000
+++ binutils-2.30/ld/testsuite/ld-plugin/lto-19c.c 2021-03-18 14:38:53.903925902 +0000
@@ -0,0 +1,9 @@
+#include "lto-19.h"
+
+int
+main ()
+{
+ struct re_dfa_t *dfa = xregcomp ();
+ rpl_regfree (dfa);
+ return 0;
+}
--- /dev/null 2021-03-18 09:46:54.398732368 +0000
+++ binutils-2.30/ld/testsuite/ld-plugin/pr26806.c 2021-03-18 14:39:16.319774345 +0000
@@ -0,0 +1,2 @@
+#include <unistd.h>
+int foo (int x) { if (__builtin_constant_p (x)) return getpid (); return 0; }
--- /dev/null 2021-03-18 09:46:54.398732368 +0000
+++ binutils-2.30/ld/testsuite/ld-plugin/pr26806.d 2021-03-18 14:39:16.319774345 +0000
@@ -0,0 +1,4 @@
+#failif
+#...
+.* _*getpid[@ ].*
+#...
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