Clang
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Get Stack Pointer
Use this macro [1]:
#define current_stack_pointer ({ \
register unsigned long esp asm("esp"); \
asm("" : "=r"(esp)); \
esp; \
})
Turn errors into warning
-Wno-error=foo Turn warning “foo” into an warning even if -Werror is specified.
Enable all warnings: -Weverything
-Weverything means enable all current and future warnings. See Better Apps with Clang's Weverything or Wall is a Lie!