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author | Florian Weimer <fweimer@redhat.com> | 2019-11-03 11:20:23 +0100 |
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committer | Florian Weimer <fweimer@redhat.com> | 2019-11-15 13:03:59 +0100 |
commit | e21a7867713c87d0b0698254685d414d811d72b2 (patch) | |
tree | 5f6a4ce16652bdd9c9f59ec9d3b5d4629104ee45 /include/link.h | |
parent | e1d559f337de2c8ab68a6749dfe873477c883807 (diff) | |
download | glibc-e21a7867713c87d0b0698254685d414d811d72b2.zip glibc-e21a7867713c87d0b0698254685d414d811d72b2.tar.gz glibc-e21a7867713c87d0b0698254685d414d811d72b2.tar.bz2 |
Avoid zero-length array at the end of struct link_map [BZ #25097]
l_audit ends up as an internal array with _rtld_global, and GCC 10
warns about this.
This commit does not change the layout of _rtld_global, so it is
suitable for backporting. Future changes could allocate more of the
audit state dynamically and remove it from always-allocated data
structures, to optimize the common case of inactive auditing.
Change-Id: Ic911100730f9124d4ea977ead8e13cee64b84d45
Diffstat (limited to 'include/link.h')
-rw-r--r-- | include/link.h | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/include/link.h b/include/link.h index 1184201..be52b97 100644 --- a/include/link.h +++ b/include/link.h @@ -325,16 +325,18 @@ struct link_map size_t l_relro_size; unsigned long long int l_serial; - - /* Audit information. This array apparent must be the last in the - structure. Never add something after it. */ - struct auditstate - { - uintptr_t cookie; - unsigned int bindflags; - } l_audit[0]; }; +/* Information used by audit modules. For most link maps, this data + immediate follows the link map in memory. For the dynamic linker, + it is allocated separately. See link_map_audit_state in + <ldsodefs.h>. */ +struct auditstate +{ + uintptr_t cookie; + unsigned int bindflags; +}; + #if __ELF_NATIVE_CLASS == 32 # define symbind symbind32 |