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Re: [PATCH 2/2] target/arm: Fix compile error.

From: Kaige Li
Subject: Re: [PATCH 2/2] target/arm: Fix compile error.
Date: Thu, 30 Jul 2020 19:27:39 +0800
User-agent: Mozilla/5.0 (X11; Linux mips64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

On 07/30/2020 07:21 PM, Peter Maydell wrote:

On Thu, 30 Jul 2020 at 12:19, Kaige Li <likaige@loongson.cn> wrote:
On 07/30/2020 04:44 PM, Peter Maydell wrote:

On Thu, 30 Jul 2020 at 02:56, Kaige Li <likaige@loongson.cn> wrote:
When I compile qemu with such as:

git clone https://git.qemu.org/git/qemu.git
cd qemu
git submodule init
git submodule update --recursive

There is error log:

/home/LiKaige/qemu/target/arm/translate-a64.c: In function ‘disas_ldst’:
/home/LiKaige/qemu/target/arm/translate-a64.c:3392:5: error: ‘fn’ may be used 
uninitialized in this function [-Werror=maybe-uninitialized]
       fn(cpu_reg(s, rt), clean_addr, tcg_rs, get_mem_index(s),
/home/LiKaige/qemu/target/arm/translate-a64.c:3318:22: note: ‘fn’ was declared 
       AtomicThreeOpFn *fn;
cc1: all warnings being treated as errors

So, add an initiallization value for fn to fix this.

Signed-off-by: Kaige Li <likaige@loongson.cn>
What compiler version is this ?
It's the latest version: v5.1.0-rc2, but VERSION shows that is 5.0.92.
Commit id is 5772f2b1fc5d00e7e04e01fa28e9081d6550440a
I asked for the compiler version, not the QEMU version :-)
Clang, gcc, OSX clang, something else, and which version number?
Sorry for that. Gcc version is 4.9.4.
-- PMM

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