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authorJoseph Myers <joseph@codesourcery.com>2018-02-19 17:32:34 +0000
committerJoseph Myers <joseph@codesourcery.com>2018-02-19 17:32:34 +0000
commitec481ad81b0436460de417a8e0084935b3763ebb (patch)
tree528d4f8b06ffe536af6ec50afb144aff6d682bca /libio
parent7d15ef84f50a80cb170f8ce3457010f59e221cb8 (diff)
downloadglibc-ec481ad81b0436460de417a8e0084935b3763ebb.tar.gz
Fix -Os ferror_unlocked linknamespace, localplt issues (bug 15105, bug 19463).
Continuing the fixes for linknamespace and localplt test failures with -Os that arise from functions not being inlined in that case, this patch fixes such failures for ferror_unlocked. The usual approach is followed of adding __ferror_unlocked (inlined when ferror_unlocked is), making calls use it when required for namespace reasons (only one such call), and using libc_hidden_proto / libc_hidden_weak for the ferror_unlocked weak alias when only localplt but not namespace issues are involved. Tested for x86_64 (both without -Os to make sure that case continues to work, and with -Os to make sure all the relevant linknamespace and localplt test failures are resolved). Because of other such failures that remain after this patch, neither of the bugs can yet be closed. [BZ #15105] [BZ #19463] * libio/ferror_u.c (ferror_unlocked): Rename to __ferror_unlocked and define as weak alias of __ferror_unlocked. Use libc_hidden_weak. * include/stdio.h [!_ISOMAC] (ferror_unlocked): Use libc_hidden_proto. [!_ISOMAC] (__ferror_unlocked) New declaration, and inline function if [__USE_EXTERN_INLINES]. * time/getdate.c (__getdate_r): Call __ferror_unlocked instead of ferror_unlocked.
Diffstat (limited to 'libio')
-rw-r--r--libio/ferror_u.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libio/ferror_u.c b/libio/ferror_u.c
index afd0bef225..3eaf84e074 100644
--- a/libio/ferror_u.c
+++ b/libio/ferror_u.c
@@ -30,8 +30,10 @@
#undef ferror_unlocked
int
-ferror_unlocked (_IO_FILE *fp)
+__ferror_unlocked (_IO_FILE *fp)
{
CHECK_FILE (fp, EOF);
return _IO_ferror_unlocked (fp);
}
+weak_alias (__ferror_unlocked, ferror_unlocked)
+libc_hidden_weak (ferror_unlocked)