+2006-08-24 Ulrich Drepper <drepper@redhat.com>
+
+ [BZ #2683]
+ * elf/dl-addr.c (_dl_addr): Don't ignore all undefined symbols.
+ If symbol has a value use it.
+ * elf/tst-dladdr1.c: New file.
+ * elf/Makefile: Add rules to build and run tst-addr1.
+
2006-08-24 Jakub Jelinek <jakub@redhat.com>
* malloc/malloc.c (sYSMALLOc): Avoid infinite loop if MMAP
tst-dlmopen1 tst-dlmopen2 tst-dlmopen3 \
unload3 unload4 unload5 unload6 tst-global1 order2 \
tst-audit1 tst-audit2 \
- tst-stackguard1
+ tst-stackguard1 tst-addr1
# reldep9
test-srcs = tst-pathopt
tests-vis-yes = vismain
$(common-objpfx)malloc/mtrace $(objpfx)tst-leaks1.mtrace > $@
tst-leaks1-ENV = MALLOC_TRACE=$(objpfx)tst-leaks1.mtrace
+
+$(objpfx)tst-addr1: $(libdl)
{
/* The hash table never references local symbols
so we can omit that test here. */
- if (symtab[symndx].st_shndx != SHN_UNDEF
+ if ((symtab[symndx].st_shndx != SHN_UNDEF
+ || symtab[symndx].st_value != 0)
#ifdef USE_TLS
&& ELFW(ST_TYPE) (symtab[symndx].st_info) != STT_TLS
#endif
#ifdef USE_TLS
&& ELFW(ST_TYPE) (symtab->st_info) != STT_TLS
#endif
- && symtab->st_shndx != SHN_UNDEF
+ && (symtab->st_shndx != SHN_UNDEF
+ || symtab->st_value != 0)
&& DL_ADDR_SYM_MATCH (match, symtab, matchsym, addr)
&& symtab->st_name < strtabsize)
matchsym = (ElfW(Sym) *) symtab;
--- /dev/null
+#include <dlfcn.h>
+#include <stdio.h>
+#include <string.h>
+
+static int
+do_test (void)
+{
+ Dl_info i;
+ if (dladdr (&printf, &i) == 0)
+ {
+ puts ("not found");
+ return 1;
+ }
+ printf ("found symbol %s in %s\n", i.dli_sname, i.dli_fname);
+ return i.dli_sname == NULL || strcmp (i.dli_sname, "printf") != 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
/* Result of the lookup functions and how to retrieve the base address. */
typedef struct link_map *lookup_t;
-# define LOOKUP_VALUE(map) map
-# define LOOKUP_VALUE_ADDRESS(map) ((map) ? (map)->l_addr : 0)
+#define LOOKUP_VALUE(map) map
+#define LOOKUP_VALUE_ADDRESS(map) ((map) ? (map)->l_addr : 0)
/* On some architectures a pointer to a function is not just a pointer
to the actual code of the function but rather an architecture