Why can I assign a string to a pointer to float?

Why is the code below working? Should that be a compilation error (or at least a run-time error)? #include int main(int argc, char** argv){ float *buf = "happy holiday"; // notice the float printf("content of buf = %s\n",buf); //its working return 0; } I compiled it and got just a warning: ~/Desktop/cTest>gcc -o run run.c run.c: In function `main': run.c:4: warning: initialization from incompatible pointer type

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