我目前正在处理这段代码：
16 functionResult function::applyfunction(const molecule m[2])const{
// \func compute the results of the application of the function on m
17 functionResult fr;
18 if (this->inst()==assemble){
19 fr.cut=false;
20 fr.del[0]=m[0];
21 fr.del[1]=m[1];
22 fr.add[0]=(this->id==0)? m[1]+m[0] : m[0]+m[1];
23 }
24 else{
25 std::pair<molecule,molecule> p;
26 p=m[0].split(this->id-2);
27 fr.cut=true;
28 fr.del[0] = m[0];
29 fr.add[0] = p.first;
30 fr.add[1] = p.second;
31 }
32 return fr;
33 }
使用gdb调试器，我设置了两个断点，如下所示：
(gdb) break function.cpp:17
Breakpoint 1 at 0x7324: file function.cpp, line 17.
(gdb) break function.cpp:32
Breakpoint 2 at 0x741b: file function.cpp, line 32.
(gdb) ignore 1 10000
Will ignore next 10000 crossings of breakpoint 1.
(gdb) ignore 2 10000
Will ignore next 10000 crossings of breakpoint 2.
问题： 当我运行该程序时，由于某种原因它停止了，但这不是我在这里发布的原因。我发布的原因是，当程序停止时，我会寻找断点：
(gdb) info break 1
Num Type Disp Enb Address What
1 breakpoint keep y 0x000055555555b324 in function::applyfunction(molecule const*) const at function.cpp:17
breakpoint already hit 326 times
ignore next 9674 hits
(gdb) info break 2
Num Type Disp Enb Address What
2 breakpoint keep y 0x000055555555b41b in function::applyfunction(molecule const*) const at function.cpp:32
breakpoint already hit 261 times
ignore next 9739 hits
那么，我的程序如何在函数中输入多次而不是退出？我精确地指出，我的整个程序都是单线程的。
edit：我已经编译为使用gcc -S -fverbose-asm function.cpp获取汇编代码，并且得到：
1 # function.cpp:16: functionResult function::applyfunction(const molecule m[2])const{ // \func compute the results of th e application of the function on m
2 movq %fs:40, %rax #, tmp141
3 movq %rax, -24(%rbp) # tmp141, D.69134
4 xorl %eax, %eax # tmp141
5 # function.cpp:17: functionResult fr;
6 movq -168(%rbp), %rax # <retval>, tmp102
7 movq %rax, %rdi # tmp102,
8 call _ZN14functionResultC1Ev #
9 # function.cpp:18: if (this->inst()==assemble){
10 movq -176(%rbp), %rax # this, tmp103
11 movq %rax, %rdi # tmp103,
12 call _ZNK8function4instEv #
13 cmpl $1, %eax #, _1
14 sete %al #, retval.0_23
15 testb %al, %al # retval.0_23
16 je .L25 #,
17 # function.cpp:19: fr.cut=false;
18 movq -168(%rbp), %rax # <retval>, tmp104
19 movb $0, (%rax) #, fr_19(D)->cut
20 # function.cpp:20: fr.del[0]=m[0];
21 movq -168(%rbp), %rax # <retval>, tmp105
22 leaq 72(%rax), %rdx #, _2
23 movq -184(%rbp), %rax # m, tmp106
24 movq %rax, %rsi # tmp106,
25 movq %rdx, %rdi # _2,
26 .LEHB0:
27 call _ZN8moleculeaSERKS_ #
28 # function.cpp:21: fr.del[1]=m[1];
29 movq -184(%rbp), %rax # m, tmp107
30 leaq 32(%rax), %rdx #, _3
31 movq -168(%rbp), %rax # <retval>, tmp108
32 addq $104, %rax #, _4
33 movq %rdx, %rsi # _3,
34 movq %rax, %rdi # _4,
35 call _ZN8moleculeaSERKS_ #
36 # function.cpp:22: fr.add[0]=(this->id==0)? m[1]+m[0] : m[0]+m[1];
37 movq -176(%rbp), %rax # this, tmp109
38 movl (%rax), %eax # this_21(D)->id, _5
39 testl %eax, %eax # _5
40 jne .L26 #,
41 # function.cpp:22: fr.add[0]=(this->id==0)? m[1]+m[0] : m[0]+m[1];
42 movq -184(%rbp), %rax # m, tmp110
43 leaq 32(%rax), %rcx #, _6
44 leaq -160(%rbp), %rax #, tmp111
45 movq -184(%rbp), %rdx # m, tmp112
46 movq %rcx, %rsi # _6,
47 movq %rax, %rdi # tmp111,
48 call _ZNK8moleculeplERKS_@PLT #
49 jmp .L27 #
50 .L26:
51 # function.cpp:22: fr.add[0]=(this->id==0)? m[1]+m[0] : m[0]+m[1];
52 movq -184(%rbp), %rax # m, tmp113
53 leaq 32(%rax), %rdx #, _7
54 leaq -160(%rbp), %rax #, tmp114
55 movq -184(%rbp), %rcx # m, tmp115
56 movq %rcx, %rsi # tmp115,
57 movq %rax, %rdi # tmp114,
58 call _ZNK8moleculeplERKS_@PLT #
59 .LEHE0:
60 .L27:
61 # function.cpp:22: fr.add[0]=(this->id==0)? m[1]+m[0] : m[0]+m[1];
62 movq -168(%rbp), %rax # <retval>, tmp116
63 leaq 8(%rax), %rdx #, _8
64 leaq -160(%rbp), %rax #, tmp117
65 movq %rax, %rsi # tmp117,
66 movq %rdx, %rdi # _8,
67 call _ZN8moleculeaSEOS_ #
68 leaq -160(%rbp), %rax #, tmp118
69 movq %rax, %rdi # tmp118,
70 call _ZN8moleculeD1Ev #
71 # function.cpp:32: return fr;
72 jmp .L24 #
73 .L25:
74 # function.cpp:25: std::pair<molecule,molecule> p;
75 leaq -160(%rbp), %rax #, tmp119
76 movq %rax, %rdi # tmp119,
77 call _ZNSt4pairI8moleculeS0_EC1IS0_S0_Lb1EEEv #
78 # function.cpp:26: p=m[0].split(this->id-2);
79 movq -176(%rbp), %rax # this, tmp120
80 movl (%rax), %eax # this_21(D)->id, _9
81 leal -2(%rax), %edx #, _10
82 leaq -96(%rbp), %rax #, tmp121
83 movq -184(%rbp), %rcx # m, tmp122
84 movq %rcx, %rsi # tmp122,
85 movq %rax, %rdi # tmp121,
86 .LEHB1:
87 call _ZNK8molecule5splitEj@PLT #
88 # function.cpp:26: p=m[0].split(this->id-2);
89 leaq -96(%rbp), %rdx #, tmp123
90 leaq -160(%rbp), %rax #, tmp124
91 movq %rdx, %rsi # tmp123,
92 movq %rax, %rdi # tmp124,
93 call _ZNSt4pairI8moleculeS0_EaSEOS1_ #
94 leaq -96(%rbp), %rax #, tmp125
95 movq %rax, %rdi # tmp125,
96 call _ZNSt4pairI8moleculeS0_ED1Ev #
97 # function.cpp:27: fr.cut=true;
98 movq -168(%rbp), %rax # <retval>, tmp126
99 movb $1, (%rax) #, fr_19(D)->cut
100 # function.cpp:28: fr.del[0] = m[0];
101 movq -168(%rbp), %rax # <retval>, tmp127
102 leaq 72(%rax), %rdx #, _11
103 movq -184(%rbp), %rax # m, tmp128
104 movq %rax, %rsi # tmp128,
105 movq %rdx, %rdi # _11,
106 call _ZN8moleculeaSERKS_ #
107 # function.cpp:29: fr.add[0] = p.first;
108 movq -168(%rbp), %rax # <retval>, tmp129
109 leaq 8(%rax), %rdx #, _12
110 leaq -160(%rbp), %rax #, tmp130
111 movq %rax, %rsi # tmp130,
112 movq %rdx, %rdi # _12,
113 call _ZN8moleculeaSERKS_ #
114 # function.cpp:30: fr.add[1] = p.second;
115 movq -168(%rbp), %rax # <retval>, tmp131
116 addq $40, %rax #, _13
117 leaq -160(%rbp), %rdx #, tmp132
118 addq $32, %rdx #, tmp133
119 movq %rdx, %rsi # tmp133,
120 movq %rax, %rdi # _13,
121 call _ZN8moleculeaSERKS_ #
122 .LEHE1:
123 # function.cpp:25: std::pair<molecule,molecule> p;
124 leaq -160(%rbp), %rax #, tmp134
125 movq %rax, %rdi # tmp134,
126 call _ZNSt4pairI8moleculeS0_ED1Ev #
127 # function.cpp:32: return fr;
128 jmp .L24 #
129 .L34:
130 movq %rax, %rbx #, tmp137
131 # function.cpp:25: std::pair<molecule,molecule> p;
132 leaq -160(%rbp), %rax #, tmp135
133 movq %rax, %rdi # tmp135,
134 call _ZNSt4pairI8moleculeS0_ED1Ev #
135 jmp .L31 #
136 .L33:
137 movq %rax, %rbx #, tmp136
138 .L31:
139 movq -168(%rbp), %rax # <retval>, tmp140
140 movq %rax, %rdi # tmp140,
141 call _ZN14functionResultD1Ev #
142 movq %rbx, %rax # tmp136, D.69132
143 movq %rax, %rdi # D.69132,
144 .LEHB2:
145 call _Unwind_Resume@PLT #
146 .LEHE2:
147 .L24:
148 # function.cpp:33: }
149 movq -168(%rbp), %rax # <retval>,
150 movq -24(%rbp), %rbx # D.69134, tmp142
151 xorq %fs:40, %rbx #, tmp142
152 je .L32 #,
153 call __stack_chk_fail@PLT #
154 .L32:
155 addq $184, %rsp #,
156 popq %rbx #
157 popq %rbp #
158 .cfi_def_cfa 7, 8
159 ret
160 .cfi_endproc
我不是汇编代码专家，我看不出哪里出错了...