From ec481ad81b0436460de417a8e0084935b3763ebb Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Mon, 19 Feb 2018 17:32:34 +0000 Subject: 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. --- libio/ferror_u.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'libio') 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) -- cgit 1.4.1