我有一个非常奇怪的问题。听起来这是一个已知的问题，但我找不到任何实际的解决方案，或者对它有任何可靠的解释。
这是我的设置：
主机： Win7 PC，充足的内存
目标： STM32F303RE Cortex M4 @ 64 MHz，位于带有集成ST-LINK 2.1的Nucleo32板上
工具链： uVision V5.16
预处理器符号： USE_STDPERIPH_DRIVER，STM32F303xE，__ CPLUSPLUS__FPU_PRESENT，__ FPU_USED
其他控制： --C99 --cpp
一切都很好。所有优化都已关闭。
问题出在运行时。在几个C ++对象实例化之后，处理器最终进入硬件处理程序。到底在哪里？我已经通过拆分我的代码片段来标记这一点。现在，我对C ++细节和内部工作有点新鲜，但听起来我和这个家伙有同样的问题：Segmentation fault caused/avoided by changing source file order in Makefile
但是，解释不清楚的解决方案。也许这不是C ++实例化的错误。虽然找不到解决方案。以下是我的程序的要点，它演示了这个问题：第一部分代码“看起来”运行良好，直到部分块我已经分离出来供你注意。
#include "main.h"
#include "stm32f30x.h"
#include "stdint.h"
#include "stdio.h"
#include "string.h"
#include "math.h"
#include "usart.h"
#include "can.h"
#include "utils.h"
#include "led.h"
#include "i2c.h"
#include "sabertooth.h"
#include "FuzzyRule.h"
#include "FuzzyComposition.h"
#include "Fuzzy.h"
#include "FuzzyRuleConsequent.h"
#include "FuzzyOutput.h"
#include "FuzzyInput.h"
#include "FuzzyIO.h"
#include "FuzzySet.h"
#include "FuzzyRuleAntecedent.h"
Fuzzy* fuzzy = new Fuzzy();
int main(void)
{
/*************************************
* Input 1
************************************/
// Two "crossing ramp" sets for rowWidth i.e. "tolerance" of the row
FuzzyInput* rowWidth = new FuzzyInput(1);
FuzzySet* lowTolerance = new FuzzySet(0.0f, 0.0f, 0.0f, 120.0f);
rowWidth->addFuzzySet(lowTolerance);
FuzzySet* highTolerance = new FuzzySet(0.0f, 120.0f, 120.0f, 120.0f);
rowWidth->addFuzzySet(highTolerance);
fuzzy->addFuzzyInput(rowWidth);
USART1_puts("row width added as fuzzy input..");
/*************************************
* Input 2
************************************/
// Five Sets for "difference between R and L distances"
FuzzyInput* distDiff = new FuzzyInput(2);
FuzzySet* tooFarRight = new FuzzySet(-60.0f, -60.0f, -54.0f, -30.0f);
distDiff->addFuzzySet(tooFarRight);
FuzzySet* right = new FuzzySet(-54.0f, -30.0f, -30.0f, 0.0f);
distDiff->addFuzzySet(right);
FuzzySet* centered = new FuzzySet(-30.0f, 0.0f, 0.0f, 30.0f);
distDiff->addFuzzySet(centered);
FuzzySet* left = new FuzzySet(0.0f, 30.0f, 30.0f, 54.0f);
distDiff->addFuzzySet(left);
FuzzySet* tooFarLeft = new FuzzySet(30.0f, 54.0f, 60.0f, 60.0f);
distDiff->addFuzzySet(tooFarLeft);
fuzzy->addFuzzyInput(distDiff);
USART1_puts("centering dist added as fuzzy input...");
/*************************************
* Output 1
************************************/
FuzzyOutput* motorSpeedDiff = new FuzzyOutput(1);
// Seven sets for steering modes to take (close ones narrow far ones wider)
FuzzySet* hardRight = new FuzzySet(-30.0f, -30.0f, -30.0f, -15.0f);
motorSpeedDiff->addFuzzySet(hardRight);
USART1_puts("\thardRight");
FuzzySet* lightRight = new FuzzySet(-15.0f, -5.0f, -5.0f, 0.0f);
motorSpeedDiff->addFuzzySet(lightRight);
USART1_puts("\tlightRight");
这是我在终端“lightRight”中看到的最后一条串行消息 下一次调用此行下方的新FuzzySet（）时会发生硬错误。
FuzzySet* nomRight = new FuzzySet(-30.0f, -15.0f, -15.0f, -5.0f);
motorSpeedDiff->addFuzzySet(nomRight);
USART1_puts("\tnomRight");
FuzzySet* lightLeft = new FuzzySet(0.0f, 5.0f, 5.0f, 15.0f);
motorSpeedDiff->addFuzzySet(lightLeft);
USART1_puts("\tlightLeft");
FuzzySet* goStraight = new FuzzySet(-5.0f, 0.0f, 0.0f, 5.0f);
motorSpeedDiff->addFuzzySet(goStraight);
USART1_puts("\tgoStraight");
FuzzySet* nomLeft = new FuzzySet(5.0f, 15.0f, 15.0f, 30.0f);
motorSpeedDiff->addFuzzySet(nomLeft);
USART1_puts("\tnomLeft");
FuzzySet* hardLeft = new FuzzySet(15.0f, 30.0f, 30.0f, 30.0f);
motorSpeedDiff->addFuzzySet(hardLeft);
USART1_puts("\thardLeft");
fuzzy->addFuzzyOutput(motorSpeedDiff);
USART1_puts("motor steering added as fuzzy output");
lotsMoreSetupCode();
while(1)
{
USART1_puts("Done!");
stop(1); // Blink LED forever
}
}
很明显，我只是制作了一堆这些模糊集合，每个模糊集合都是4个浮点数的集合，但是某个地方有一个狂野的指针飞过？
这是在FuzzySet.cpp中找到的构造函数:(我没写过的模糊逻辑库的一部分）这个SAME程序在Arduino上运行良好，但不是这个处理器。编译器的区别？
FuzzySet::FuzzySet(){
}
FuzzySet::FuzzySet(float a, float b, float c, float d){
this->a = a;
this->b = b;
this->c = c;
this->d = d;
this->pertinence = 0.0;
}
这听起来与其他上下文中其他静态声明函数访问的静态变量有关。
但我没有任何声明静态。
堆栈交换链接中的某个人说它可能是链接器错误。你同意吗？如何修复？
关于实际发生的事情的任何想法？
我已经设置了打印寄存器信息的漂亮的硬错误处理程序，但显然错误发生在main（）之前。因此，当事情变得混乱时，去汇编代码似乎没有用。
如何修复此问题？感谢您的C ++专业知识！
答案 0 :(得分：0)
尝试根据您在startup_stm32fxxx.s文件中使用的微控制器更改代码的堆和堆栈大小
这是示例
;******************** (C) COPYRIGHT 2016 STMicroelectronics ********************
;* File Name : startup_stm32f407xx.s
;* Author : MCD Application Team
;* Version : V2.4.3
;* Date : 22-January-2016
;* Description : STM32F407xx devices vector table for MDK-ARM toolchain.
;* This module performs:
;* - Set the initial SP
;* - Set the initial PC == Reset_Handler
;* - Set the vector table entries with the exceptions ISR address
;* - Branches to __main in the C library (which eventually
;* calls main()).
;* After Reset the CortexM4 processor is in Thread mode,
;* priority is Privileged, and the Stack is set to Main.
;* <<< Use Configuration Wizard in Context Menu >>>
;*******************************************************************************
;
;* Redistribution and use in source and binary forms, with or without modification,
;* are permitted provided that the following conditions are met:
;* 1. Redistributions of source code must retain the above copyright notice,
;* this list of conditions and the following disclaimer.
;* 2. Redistributions in binary form must reproduce the above copyright notice,
;* this list of conditions and the following disclaimer in the documentation
;* and/or other materials provided with the distribution.
;* 3. Neither the name of STMicroelectronics nor the names of its contributors
;* may be used to endorse or promote products derived from this software
;* without specific prior written permission.
;*
;* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
;* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
;* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
;* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
;* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
;* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
;* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
;* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
;* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;
;*******************************************************************************
; Amount of memory (in bytes) allocated for Stack
; Tailor this value to your application needs
; <h> Stack Configuration
; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
; </h>
Stack_Size EQU 0x200 ; <your stack size>
AREA STACK, NOINIT, READWRITE, ALIGN=3
Stack_Mem SPACE Stack_Size
__initial_sp
; <h> Heap Configuration
; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
; </h>
Heap_Size EQU 0x400 ; <your heap size>
AREA HEAP, NOINIT, READWRITE, ALIGN=3
__heap_base
Heap_Mem SPACE Heap_Size
__heap_limit
PRESERVE8
THUMB
; Vector Table Mapped to Address 0 at Reset
AREA RESET, DATA, READONLY
EXPORT __Vectors
EXPORT __Vectors_End
EXPORT __Vectors_Size
堆栈的值由该行
设置Stack_Size EQU 0x200 ; <your stack size>
和堆
Heap_Size EQU 0x400 ; <your heap size>
在Keil uVision中，您还可以在左下角有两个标签，您可以在其中切换＆＃34;文本编辑器＆＃34;和＃34;配置向导＆＃34;更改代码堆和堆栈大小。