https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110426
Bug ID: 110426 Summary: Missing buffer overflow warning with function pointer that has the alloc_size attribute Product: gcc Version: 13.1.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: analyzer Assignee: dmalcolm at gcc dot gnu.org Reporter: alexhenrie24 at gmail dot com Target Milestone: --- I expected to get a warning when compiling this program with -fanalyzer: #include <stdlib.h> extern void* (*my_alloc)(size_t) __attribute__ ((alloc_size (1))); int main(void) { int *x = my_alloc(1); x[0] = 0; // buffer overflow! return 0; } There is a warning if I call malloc instead of my_alloc.