Backport patches to fix CVE-2023-4039. · Pull Request !348 · src-openEuler/gcc

上游补丁：https://gcc.gnu.org/git/?p=gcc.git;a=shortlog;h=refs/vendors/ARM/heads/CVE-2023-4039/gcc-7
DejaGnu测试结果：

打补丁之前：

```
		=== gcc Summary ===

# of expected passes		114537
# of unexpected failures	188
# of expected failures		311
# of unsupported tests		2258

=== gfortran Summary ===

# of expected passes		44621
# of expected failures		84
# of unsupported tests		86

=== g++ Summary ===

# of expected passes		107439
# of unexpected failures	231
# of expected failures		386
# of unsupported tests		4776

=== obj-c++ Summary ===

# of expected passes		1451
# of expected failures		10
# of unsupported tests		77

=== objc Summary ===

# of expected passes		2801
# of unsupported tests		69

```

打补丁之后：