https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111863
Bug ID: 111863
Summary: Wrong code with "-O3 -fno-tree-ccp
-fno-tree-dominator-opts -fno-tree-vrp"
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: 19373742 at buaa dot edu.cn
Target Milestone: ---
Created attachment 56138
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56138&action=edit
The preprocessed file
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OS and Platform:
Ubuntu 20.04.4 LTS
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gcc version:
$ gcc -v
Using built-in specs.
COLLECT_GCC=/home/cuisk/ctc/gcc-releases/gcc-14/bin/gcc
COLLECT_LTO_WRAPPER=/home/cuisk/ctc/gcc-releases/gcc-14/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure --prefix=/home/cuisk/ctc/gcc-releases/gcc-14
--disable-multilib --enable-language=c,c++
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20231015 (experimental) (GCC)
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Command Lines:
$ gcc -I ~/csmith/include/csmith-2.3.0/ -fsanitize=undefined a.c -o crt
$ ./crt
checksum = 2E494827
$ gcc -I ~/csmith/include/csmith-2.3.0/ -O3 -fno-tree-ccp
-fno-tree-dominator-opts -fno-tree-vrp a.c -o mis
$ ./mis
checksum = 326ED032
