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--- a/mysys/my_context.c
+++ b/mysys/my_context.c
@@ -206,15 +206,6 @@ my_context_spawn(struct my_context *c, void (*f)(void *), void *d)
(
"movq %%rsp, (%[save])\n\t"
"movq %[stack], %%rsp\n\t"
-#if __GNUC__ >= 4 && __GNUC_MINOR__ >= 4 && !defined(__INTEL_COMPILER)
- /*
- This emits a DWARF DW_CFA_undefined directive to make the return address
- undefined. This indicates that this is the top of the stack frame, and
- helps tools that use DWARF stack unwinding to obtain stack traces.
- (I use numeric constant to avoid a dependency on libdwarf includes).
- */
- ".cfi_escape 0x07, 16\n\t"
-#endif
"movq %%rbp, 8(%[save])\n\t"
"movq %%rbx, 16(%[save])\n\t"
"movq %%r12, 24(%[save])\n\t"
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