https://bugs.llvm.org/show_bug.cgi?id=45552
Bug ID: 45552
Summary: nobuiltin attribute ignored for sema diagnostics
Product: clang
Version: 10.0
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: -New Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected]
#include <cstring>
static void overflow(void) __attribute__((no_builtin))
{
char buf[8];
/* Intentionally overwrite the stack. */
memset(buf, 0x47, sizeof(buf)+24);
}
Compiled with `-Wfortify-source` emits a warning
(https://godbolt.org/z/nej7MN), while it does not when `-Wfortify-source
-fnobuiltin` is specified.
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