Joseph Myers d7c1214f4d Use libc_hidden_* for fputs (bug 15105). ...

Among other localplt test failures when building with -Os, there are
libc.so PLT references for fputs.  fputs calls normally get redirected
to _IO_fputs by a macro in include/stdio.h (and _IO_fputs in turn uses
libc_hidden_proto), but GCC can convert an fprintf call with a
constant string argument into an fputs call, which of course is then
unaffected by the macro redirection.  (I don't know why this issue
only appears with -Os.)

This patch duly adds a use of libc_hidden_proto for fputs.  I see no
obvious reason why the fputs macro redirection is needed at all, but
this patch does not change it.

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/stdio.h [!_ISOMAC && IS_IN (libc)] (fputs): Use
	libc_hidden_proto.
	* libio/iofputs.c (fputs): Use libc_hidden_weak.

(cherry picked from commit 499b315324519f8deb5b42a143a76319934a3ab0)

2021-11-19 13:20:26 -08:00

..

bits

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__fbufsize.c

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_G_config.h

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bug-fopena+.c

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bug-fseek.c

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bug-ftell.c

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bug-memstream1.c

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bug-mmap-fflush.c

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bug-rewind2.c

Fix warnings in fwscanf / rewind tests.

2014-11-26 12:54:39 +00:00

bug-rewind.c

Fix warnings in fwscanf / rewind tests.

2014-11-26 12:54:39 +00:00

bug-ungetc2.c

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bug-ungetc.c

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bug-ungetwc1.c

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2014-11-27 16:01:04 +00:00

bug-ungetwc2.c

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bug-wfflush.c

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bug-wmemstream1.c

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2017-02-16 17:33:18 -05:00

bug-wsetpos.c

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clearerr.c

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Depend

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iofputs_u.c

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iofputs.c

Use libc_hidden_* for fputs (bug 15105).

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iofputws_u.c

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iolibio.h

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iovsprintf.c

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libc_fatal.c

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libio.h

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Makefile

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memstream.c

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obprintf.c

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rewind.c

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setbuf.c

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stdio.c

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stdio.h

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swprintf.c

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swscanf.c

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test-freopen.sh

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tst_getwc.c

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tst_putwc.c

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tst_swprintf.c

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tst_wprintf2.c

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tst_wprintf.c

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tst-atime.c

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tst-bz22415.c

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tst-cleanup-default-static.c

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tst-cleanup-default.c

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tst-cleanup-nostart-stop-gc-static.c

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tst-cleanup-nostart-stop-gc.c

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tst-cleanup-start-stop-gc-static.c

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tst-cleanup-start-stop-gc.c

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tst-cleanup.c

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tst-cleanup.exp

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tst-eof.c

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tst-fopenloc.c

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tst-fwrite-error.c

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tst-memstream1.c

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tst-memstream2.c

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tst-memstream3.c

libio: Rename _FWRITE to FWRITE_FUNC

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tst-mmap2-eofsync.c

2016-06-11 Paul Pluzhnikov <ppluzhnikov@google.com>

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tst-mmap-eofsync.c

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tst-mmap-setvbuf.c

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tst-popen1.c

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tst-sscanf.c

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tst-swscanf.c

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tst-ungetwc1.c

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tst-ungetwc2.c

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tst-widetext.c

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tst-widetext.input

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tst-wmemstream1.c

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tst-wmemstream3.c

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vasprintf.c

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Versions

Single threaded stdio optimization

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vscanf.c

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vsnprintf.c

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wstrops.c

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