PCTRACE-FAST

Syntax

PCTRACE-FAST [on|off]

Variable

VT_PCTRACE_FAST

Default

on for performance tracing, off for correctness checking

Description

Controls whether the fast, but less reliable stack unwinding is used or the slower, but less error-prone unwinding through libunwind. The fast unwinding relies on frame pointers, therefore all code must be compiled accordingly for it to work correctly.

For more complete information about compiler optimizations, see our Optimization Notice.
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