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35 lines
686 B
C
35 lines
686 B
C
#include "ruby.h"
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#include "internal/string.h"
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static VALUE
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stack_alloca_overflow(VALUE self)
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{
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size_t i = 0;
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while (1) {
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// Allocate and touch memory to force actual stack usage:
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volatile char *stack = alloca(1024);
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stack[0] = (char)i;
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stack[1023] = (char)i;
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i++;
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}
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return Qnil;
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}
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static VALUE
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asan_p(VALUE klass)
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{
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#if defined(__SANITIZE_ADDRESS__) || __has_feature(address_sanitizer)
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return Qtrue;
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#else
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return Qfalse;
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#endif
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}
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void
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Init_stack(VALUE klass)
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{
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rb_define_singleton_method(rb_cThread, "alloca_overflow", stack_alloca_overflow, 0);
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rb_define_singleton_method(rb_cThread, "asan?", asan_p, 0);
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}
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