C++ 核心转储文件中出现奇怪的大小变化

我有以下两个显然都会导致堆栈溢出错误的C代码片段:

a.c个

int f(int i) {
    f(i);
}

int main() {
    f(1);
}

b.c

int f(int i) {
    f(i+1); 
}

int main() {
    f(1);
}

在运行两者并查看coredumpsctl list中产生的结果后，输出大小非常不同:

Tue 2024-02-20 15:38:28 +0330 420696 1000 1000 SIGSEGV present  /tmp/a  204.2K
Tue 2024-02-20 15:38:30 +0330 420710 1000 1000 SIGSEGV present  /tmp/b  899.7K

第二个程序的(b.c)核心转储大小是第一个程序的4倍多.这对我来说很奇怪，因为两个程序没有任何明显的区别.有人能解释一下这种行为吗？

编辑

我使用以下命令编译这两个文件:

$ gcc a.c -o a && gcc b.c -o b

我使用的gcc版本:

$ gcc --version
gcc (Debian 12.2.0-14) 12.2.0

Also assembly generated for a.c个 (using objdump -S):

0000000000001129 <f>:
    1129:   55                      push   %rbp
    112a:   48 89 e5                mov    %rsp,%rbp
    112d:   48 83 ec 10             sub    $0x10,%rsp
    1131:   89 7d fc                mov    %edi,-0x4(%rbp)
    1134:   8b 45 fc                mov    -0x4(%rbp),%eax
    1137:   89 c7                   mov    %eax,%edi
    1139:   e8 eb ff ff ff          call   1129 <f>
    113e:   90                      nop
    113f:   c9                      leave
    1140:   c3                      ret

0000000000001141 <main>:
    1141:   55                      push   %rbp
    1142:   48 89 e5                mov    %rsp,%rbp
    1145:   bf 01 00 00 00          mov    $0x1,%edi
    114a:   e8 da ff ff ff          call   1129 <f>
    114f:   b8 00 00 00 00          mov    $0x0,%eax
    1154:   5d                      pop    %rbp
    1155:   c3                      ret

对于b.c:

0000000000001129 <f>:
    1129:   55                      push   %rbp
    112a:   48 89 e5                mov    %rsp,%rbp
    112d:   48 83 ec 10             sub    $0x10,%rsp
    1131:   89 7d fc                mov    %edi,-0x4(%rbp)
    1134:   8b 45 fc                mov    -0x4(%rbp),%eax
    1137:   83 c0 01                add    $0x1,%eax
    113a:   89 c7                   mov    %eax,%edi
    113c:   e8 e8 ff ff ff          call   1129 <f>
    1141:   90                      nop
    1142:   c9                      leave
    1143:   c3                      ret

0000000000001144 <main>:
    1144:   55                      push   %rbp
    1145:   48 89 e5                mov    %rsp,%rbp
    1148:   bf 01 00 00 00          mov    $0x1,%edi
    114d:   e8 d7 ff ff ff          call   1129 <f>
    1152:   b8 00 00 00 00          mov    $0x0,%eax
    1157:   5d                      pop    %rbp
    1158:   c3                      ret