[Bug target/105523] Wrong warning array subscript [0] is outside array bounds

klaus.doldinger64 at googlemail dot com gcc-bugzilla@gcc.gnu.org
Mon May 9 06:59:55 GMT 2022


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105523

--- Comment #4 from Wilhelm M <klaus.doldinger64 at googlemail dot com> ---
The strange thing is, that it depends on how the assignment is written:

#include <avr/io.h>

int main() {
    GPIOR0 = 0x01; // no warning

    (*(volatile uint8_t *)(0x001C)) = 0x01; // warning
}

The cpp replaces the GPIOR0 access to essentially the same line as the
following line, where the warning occures.


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