From e4452a2d19279d4c90bcafe09ec3cbfd3efe9b6a Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Thu, 15 Feb 2018 20:59:12 +0000 Subject: Use libc_hidden_* for __cmsg_nxthdr (bug 15105). Among other localplt test failures when building with -Os, there are libc.so PLT references for __cmsg_nxthdr. This is a simple case of a function that is inlined for -O2 but not for -Os; this patch adds libc_hidden_proto / libc_hidden_def for it to avoid a localplt failure even when it is not inlined. Tested for x86_64 (both that it removes this particular localplt failure for -Os - but other such failures remain so the bug can't yet be closed - and that the testsuite continues to pass without -Os). [BZ #15105] * include/sys/socket.h [!_ISOMAC] (__cmsg_nxthdr): Use libc_hidden_proto. * sysdeps/unix/sysv/linux/cmsg_nxthdr.c (__cmsg_nxthdr): Use libc_hidden_def. --- ChangeLog | 6 ++++++ include/sys/socket.h | 2 ++ sysdeps/unix/sysv/linux/cmsg_nxthdr.c | 1 + 3 files changed, 9 insertions(+) diff --git a/ChangeLog b/ChangeLog index 36ee493..1d9e54b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,6 +1,12 @@ 2018-02-15 Joseph Myers [BZ #15105] + * include/sys/socket.h [!_ISOMAC] (__cmsg_nxthdr): Use + libc_hidden_proto. + * sysdeps/unix/sysv/linux/cmsg_nxthdr.c (__cmsg_nxthdr): Use + libc_hidden_def. + + [BZ #15105] * include/stdio.h [!_ISOMAC && IS_IN (libc)] (fputs): Use libc_hidden_proto. * libio/iofputs.c (fputs): Use libc_hidden_weak. diff --git a/include/sys/socket.h b/include/sys/socket.h index baec6e6..26db0e0 100644 --- a/include/sys/socket.h +++ b/include/sys/socket.h @@ -154,5 +154,7 @@ libc_hidden_proto (__libc_sa_len) # define SA_LEN(_x) __libc_sa_len((_x)->sa_family) #endif +libc_hidden_proto (__cmsg_nxthdr) + #endif #endif diff --git a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c index fa0468e..bab0be6 100644 --- a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c +++ b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c @@ -37,3 +37,4 @@ __cmsg_nxthdr (struct msghdr *mhdr, struct cmsghdr *cmsg) return NULL; return cmsg; } +libc_hidden_def (__cmsg_nxthdr) -- cgit v1.1