diff options
Diffstat (limited to 'libc/elf/get-dynamic-info.h')
| -rw-r--r-- | libc/elf/get-dynamic-info.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libc/elf/get-dynamic-info.h b/libc/elf/get-dynamic-info.h index ffac75f63..026f24623 100644 --- a/libc/elf/get-dynamic-info.h +++ b/libc/elf/get-dynamic-info.h @@ -151,6 +151,17 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp) { l->l_flags_1 = info[VERSYMIDX (DT_FLAGS_1)]->d_un.d_val; + /* Only DT_1_SUPPORTED_MASK bits are supported, and we would like + to assert this, but we can't. Users have been setting + unsupported DF_1_* flags for a long time and glibc has ignored + them. Therefore to avoid breaking existing applications the + best we can do is add a warning during debugging with the + intent of notifying the user of the problem. */ + if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_FILES, 0) + && l->l_flags_1 & ~DT_1_SUPPORTED_MASK) + _dl_debug_printf ("\nWARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1.\n", + l->l_flags_1 & ~DT_1_SUPPORTED_MASK); + if (l->l_flags_1 & DF_1_NOW) info[DT_BIND_NOW] = info[VERSYMIDX (DT_FLAGS_1)]; } |