Messages in this thread | | | Date | Sun, 26 Mar 2023 13:42:35 -0500 (EST) | From | Thomas Weißschuh <> | Subject | Re: [PATCH 6/8] tools/nolibc: tests: add test for -fstack-protector |
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Mar 26, 2023 13:30:21 Alexey Dobriyan <adobriyan@gmail.com>:
> Willy Tarreau wrote: >> #if defined(__clang__) >> __attribute__((optnone)) >> #elif defined(__GNUC__) >> __attribute__((optimize("O0"))) >> #endif >> static int smash_stack(void) >> { >> char buf[100]; >> >> for (size_t i = 0; i < 200; i++) >> buf[i] = 'P'; >> >> return 1; >> } > > If you want to corrupt the stack, corrupt the stack!
I do!
> asm( > ".globl f\n" > "f:\n" > "movq $0, (%rsp)\n" > "ret\n" > ".type f,@function\n" > ".size f,.-f" > ); > > No problems with optimisation levels.
Wouldn't this be architecture-specific?
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