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Extremely weird problem with GL shader compiler

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Whatever I do to my shaders under any circumstance, the shader info logs will say everything compiled fine, and the program log will say the shaders failed to link. Loading the shaders
	char* fSource = textFileRead("frag.txt");
	char* vSource = textFileRead("vert.txt");
	GLuint vShader, fShader;
	program = glCreateProgram();
	vShader = glCreateShader(GL_VERTEX_SHADER);
	fShader = glCreateShader(GL_FRAGMENT_SHADER);
	glShaderSource(vShader, 0, (const GLchar**)vSource, 0);
	glShaderSource(fShader, 0, (const GLchar**)fSource, 0);
	glAttachShader(program, vShader);
	glAttachShader(program, fShader);
	glUniform1i(glGetUniformLocation(program, "shadowMap"), 0);
	char log[512];
	glGetShaderInfoLog(vShader, 512, 0, log);
	printf("%s\n", log);
	glGetShaderInfoLog(fShader, 512, 0, log);
	printf("%s\n", log);
	glGetProgramInfoLog(program, 512, 0, log);
	printf("%s\n", log);
	printf("%s\n", vSource);
	printf("%s\n", fSource);
	delete[] vSource;
	delete[] fSource;
varying vec4 shadowCoord;

void main(void)
	gl_Position = ftransform();
	shadowCoord = gl_Vertex * gl_TextureMatrix[0] * gl_ModelViewMatrix;
varying vec4 shadowCoord;

uniform sampler2DShadow shadowMap;

void main(void)
	gl_FragColor = shadow2DProj(shadowMap, shadowCoord);
This is about the most annoying and obscure problem I've had so far. All help appreciated.

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