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cat <<'EOF' > input
foo
bar
baz
EOF
cat <<'EOF' > expected
foo
foo
bar
bar
baz
baz
EOF
test_diff hoge piyo fuga<<'EOF'
struct FILE;
typedef struct FILE FILE;
extern FILE* stdin;
extern FILE* stdout;
int fprintf();
char* fgets();
void* calloc();
int main() {
char* buf = calloc(256, sizeof(char));
while (fgets(buf, 256, stdin)) {
fprintf(stdout, "%s%s", buf, buf);
}
return 0;
}
EOF
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