OpenGL: ERROR: Compiled vertex shader was corrupt - c++

Question

This was my vertex shader before it was corrupt:
#version 330 core
layout (location = 0) in vec3 aPos;
uniform mat4 m;
uniform mat4 v;
uniform mat4 p;
out vec2 texPos;
void main() {
gl_Position = p * v * m * vec4(aPos, 1.0);
texPos = vec2(0, 0);
}
And this is my vertex shader after it was corrupt:
#version 330 core
layout (location = 0) in vec3 aPos;
layout (location = 1) in vec2 aTexPos;
uniform mat4 m;
uniform mat4 v;
uniform mat4 p;
out vec2 texPos;
void main() {
gl_Position = p * v * m * vec4(aPos, 1.0);
texPos = vec2(0, 0);
}
The difference between them is just a layout (location = 1) in vec2 aTexPos. How and why did this 'corruption' happen?
EDIT: here's the loadProgram function that is used to load the shaders:
GLuint Framework::loadProgram(string vpath, string fpath) {
GLuint v, f;
stringstream ss;
char log[512];
v = glCreateShader(GL_VERTEX_SHADER);
fstream vf(vpath);
if (vf.good()) {
ss << vf.rdbuf();
const GLchar* g = ss.str().c_str();
glShaderSource(v, 1, &g, nullptr);
glCompileShader(v);
glGetShaderInfoLog(v, 512, nullptr, log);
cout << "Vertex Shader: " << log << endl;
} else {
cout << "Bad path " << vpath.c_str() << endl;
return static_cast<GLuint>(-1);
}
ss.str("");
f = glCreateShader(GL_FRAGMENT_SHADER);
fstream ff(fpath);
if (ff.good()) {
ss << ff.rdbuf();
const GLchar* g = ss.str().c_str();
glShaderSource(f, 1, &g, nullptr);
glCompileShader(f);
glGetShaderInfoLog(f, 512, nullptr, log);
cout << "Fragment Shader: " << log << endl;
} else {
cout << "Bad path " << fpath.c_str() << endl;
return static_cast<GLuint>(-1);
}
GLuint prog;
prog = glCreateProgram();
glAttachShader(prog, v);
glAttachShader(prog, f);
glLinkProgram(prog);
glGetProgramInfoLog(prog, 512, nullptr, log);
cout << "Program: " << log;
glDeleteShader(v);
glDeleteShader(f);
return prog;
}
It just says it's corrupted... And I have no idea where it had gone wrong.
Here's what I got when I run the program:
Vertex Shader:
Fragment Shader:
Program: ERROR: Compiled vertexshader was corrupt.

Answer 1

Problem solved.
It's the problem of the loadProgram function, that vertex shader's ss.str().c_str() return a single '\0' character. I have no idea why fragment shader's string stream works well, though.
So here's the code now:
GLuint Framework::loadProgram(string vpath, string fpath) {
GLuint v, f;
stringstream ss;
char log[512];
v = glCreateShader(GL_VERTEX_SHADER);
fstream vf(vpath);
if (vf.good()) {
ss << vf.rdbuf();
string str = ss.str();
const GLchar* g = str.c_str();
glShaderSource(v, 1, &g, nullptr);
glCompileShader(v);
glGetShaderInfoLog(v, 512, nullptr, log);
cout << "Vertex Shader: " << log << endl;
} else {
cout << "Bad path " << vpath.c_str() << endl;
return static_cast<GLuint>(-1);
}
ss.str("");
f = glCreateShader(GL_FRAGMENT_SHADER);
fstream ff(fpath);
if (ff.good()) {
ss << ff.rdbuf();
string str = ss.str();
const GLchar* g = str.c_str();
glShaderSource(f, 1, &g, nullptr);
glCompileShader(f);
glGetShaderInfoLog(f, 512, nullptr, log);
cout << "Fragment Shader: " << log << endl;
} else {
cout << "Bad path " << fpath.c_str() << endl;
return static_cast<GLuint>(-1);
}
GLuint prog;
prog = glCreateProgram();
glAttachShader(prog, v);
glAttachShader(prog, f);
glLinkProgram(prog);
glGetProgramInfoLog(prog, 512, nullptr, log);
cout << "Program: " << log;
glDeleteShader(v);
glDeleteShader(f);
return prog;
}