Framework to measure stack usage - #318
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Measure the stack usage of a code snippet. The new macro `MBEDTLS_TEST_STACK_USAGE_CHECK()` allows test code to assert that no more than N bytes of stack have been used. The implementation uses `alloca()`. It is only enabled when the C compiler has `__has_include`, which allows the build to succeed on targets that don't have `alloca()`. The implementation would be compatible with MSan, but it is disabled because MSan causes stack usage to be more than doubled, which would make measurements mostly useless. The implementation is compatible with Valgrind. If the stack usage implementation is disabled, provide dummy functions that do nothing. Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
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Measure the stack usage of a code snippet. The new macro
MBEDTLS_TEST_STACK_USAGE_CHECK()allows test code to assert that no more than N bytes of stack have been used.PR checklist
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