[Buildroot] [PATCH] elf2flt: add patch "Fix buffer overflow in output_relocs()"

[Maxime Coquelin]

This patches fixes the following crash:
make[1]: Entering directory `<...>/build/uclibc-1.0.14'
  CC utils/getconf
*** buffer overflow detected ***: <...>/bin/elf2flt terminated
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7338f)[0x2ad3be5f738f]
/lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x5c)[0x2ad3be68ec9c]
/lib/x86_64-linux-gnu/libc.so.6(+0x109b60)[0x2ad3be68db60]
/lib/x86_64-linux-gnu/libc.so.6(+0x109069)[0x2ad3be68d069]
/lib/x86_64-linux-gnu/libc.so.6(_IO_default_xsputn+0xbc)[0x2ad3be5ff70c]
/lib/x86_64-linux-gnu/libc.so.6(_IO_vfprintf+0xaef)[0x2ad3be5ce7df]
/lib/x86_64-linux-gnu/libc.so.6(__vsprintf_chk+0x84)[0x2ad3be68d0f4]
/lib/x86_64-linux-gnu/libc.so.6(__sprintf_chk+0x7d)[0x2ad3be68d04d]
 <...>/bin/elf2flt[0x403cda]
 <...>/bin/elf2flt[0x4030a4]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x2ad3be5a5ec5]
 <...>/bin/elf2flt[0x403642]

A pull-request has been sent for this patch to elf2flt developers, so we can
remove it as soon as the patch is accepted upstream.

Signed-off-by: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
---
 package/elf2flt/elf2flt.hash | 1 +
 package/elf2flt/elf2flt.mk   | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/package/elf2flt/elf2flt.hash b/package/elf2flt/elf2flt.hash
index be7c77605be7..89d22222733e 100644
--- a/package/elf2flt/elf2flt.hash
+++ b/package/elf2flt/elf2flt.hash
@@ -1,2 +1,3 @@
 # Locally calculated
 sha256 64ede6936aa88028378e08192039c29791b9e32714cc861762214b8e106e7145 elf2flt-8a3e74446fe7d866f0517ee089a37f4bdf4bc9f7.tar.gz
+sha256 2659d8a7fca078dfe7ce9a3754d94a0cad3dc1fc7b8b0db5cf08f14bb34e4865 4595382ea76f85dced017b1b17b37ef9513458b6.patch
diff --git a/package/elf2flt/elf2flt.mk b/package/elf2flt/elf2flt.mk
index 6c16c3000d89..1ddfbe3bef14 100644
--- a/package/elf2flt/elf2flt.mk
+++ b/package/elf2flt/elf2flt.mk
@@ -8,6 +8,7 @@ ELF2FLT_VERSION = 8a3e74446fe7d866f0517ee089a37f4bdf4bc9f7
 ELF2FLT_SITE = $(call github,uclinux-dev,elf2flt,$(ELF2FLT_VERSION))
 ELF2FLT_LICENSE = GPLv2+
 ELF2FLT_LICENSE_FILES = LICENSE.TXT
+ELF2FLT_PATCH = https://github.com/mcoquelin-stm32/elf2flt/commit/4595382ea76f85dced017b1b17b37ef9513458b6.patch
 
 HOST_ELF2FLT_DEPENDENCIES = host-binutils host-zlib
 
@@ -23,6 +24,8 @@ HOST_ELF2FLT_CONF_OPTS = \
 
 HOST_ELF2FLT_LIBS = -lz
 
+HOST_ELF2FLT_CFLAGS += "-g "
+
 ifeq ($(BR2_GCC_ENABLE_LTO),y)
 HOST_ELF2FLT_LIBS += -ldl
 endif
-- 
1.9.1