57 lines
2.2 KiB
C
57 lines
2.2 KiB
C
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#include "akerror.h"
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#include "err_capture.h"
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#include <string.h>
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/*
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* A library may reserve its status range from its own init() before anything in
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* the process has raised an error, i.e. before akerr_init() has run. That used
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* to be silently destructive: akerr_init() clears the range and name tables, so
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* whichever component first triggered it (via PREPARE_ERROR) wiped the earlier
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* reservation, and the *next* component to claim the same range was told OK --
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* producing exactly the undetected aliasing the registry exists to prevent.
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*
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* Every public registry entry point now calls akerr_init() itself, so the
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* tables are only ever cleared before the first reservation, never after one.
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*
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* Note this test must not call akerr_init() or PREPARE_ERROR first -- the
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* uninitialized entry is the whole point.
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*/
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int main(void)
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{
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akerr_capture_install();
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/* Cold call: no akerr_init(), no PREPARE_ERROR anywhere yet. */
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AKERR_CHECK(akerr_reserve_status_range(256, 16, "early-lib") ==
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AKERR_STATUS_RANGE_OK);
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AKERR_CHECK(akerr_register_status_name("early-lib", 256, "Early Error") ==
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AKERR_STATUS_NAME_OK);
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/* Something else now uses the library for the first time. */
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akerr_init();
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PREPARE_ERROR(e);
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(void)e;
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/* The early reservation and its name must both have survived. */
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AKERR_CHECK(strcmp(akerr_name_for_status(256, NULL), "Early Error") == 0);
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AKERR_CHECK(akerr_reserve_status_range(256, 16, "late-lib") ==
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AKERR_STATUS_RANGE_OVERLAP);
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AKERR_CHECK_CONTAINS("early-lib");
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AKERR_CHECK(akerr_reserve_status_range(260, 2, "late-lib") ==
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AKERR_STATUS_RANGE_OVERLAP);
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/* The library's own initialization still happened exactly once. */
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AKERR_CHECK(strcmp(akerr_name_for_status(AKERR_NULLPOINTER, NULL),
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"Null Pointer Error") == 0);
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AKERR_CHECK(akerr_reserve_status_range(0, AKERR_RESERVED_STATUS_COUNT,
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AKERR_LIBRARY_OWNER) ==
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AKERR_STATUS_RANGE_OK);
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/* An identical repeat by the original owner is still idempotent. */
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AKERR_CHECK(akerr_reserve_status_range(256, 16, "early-lib") ==
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AKERR_STATUS_RANGE_OK);
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fprintf(stderr, "err_registry_init_order ok\n");
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return 0;
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}
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