elfutils: fix build with -Os
(From OE-Core rev: c46661bf4ffe1a474e4bcfadb4a3f12a46e8cc4a) Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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From 668accf322fd7185e273bfd50b84320e71d9de5a Mon Sep 17 00:00:00 2001
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From: Martin Jansa <Martin.Jansa@gmail.com>
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Date: Fri, 10 Apr 2015 00:29:18 +0200
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Subject: [PATCH] elf_getarsym: Silence -Werror=maybe-uninitialized false
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positive
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Upstream-Status: Pending
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Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
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---
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libelf/elf_getarsym.c | 9 +++++++--
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1 file changed, 7 insertions(+), 2 deletions(-)
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diff --git a/libelf/elf_getarsym.c b/libelf/elf_getarsym.c
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index d0bb28a..08954d2 100644
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--- a/libelf/elf_getarsym.c
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+++ b/libelf/elf_getarsym.c
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@@ -165,8 +165,13 @@ elf_getarsym (elf, ptr)
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int w = index64_p ? 8 : 4;
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/* We have an archive. The first word in there is the number of
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- entries in the table. */
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- uint64_t n;
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+ entries in the table.
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+ Set to SIZE_MAX just to silence -Werror=maybe-uninitialized
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+ elf_getarsym.c:290:9: error: 'n' may be used uninitialized in this function
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+ The read_number_entries function doesn't initialize n only when returning
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+ -1 which in turn ensures to jump over usage of this uninitialized variable.
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+ */
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+ uint64_t n = SIZE_MAX;
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size_t off = elf->start_offset + SARMAG + sizeof (struct ar_hdr);
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if (read_number_entries (&n, elf, &off, index64_p) < 0)
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{
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--
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2.3.5
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@ -15,6 +15,7 @@ SRC_URI += "\
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file://dso-link-change.patch \
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file://Fix_elf_cvt_gunhash.patch \
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file://fixheadercheck.patch \
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file://0001-elf_getarsym-Silence-Werror-maybe-uninitialized-fals.patch \
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"
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# pick the patch from debian
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