| 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2023 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // boxed.bookend.cfa -- stack address recording and acceptance for the "array boxed" test
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| 8 | //
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| 9 | // Author : Mike Brooks
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| 10 | // Created On : Thu Jul 25 17:00:00 2024
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| 11 | // Last Modified By :
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| 12 | // Last Modified On :
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| 13 | // Update Count :
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| 14 | //
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| 15 |
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| 16 | // See general test documentation in boxed.main.cfa.
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| 17 | // See abbreviation definitions in boxed.cases.hfa.
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| 18 |
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| 19 |
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| 20 |
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| 21 |
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| 22 | #include "boxed.hfa"
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| 23 |
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| 24 | char * ar_lo = (char *) -1;
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| 25 | char * ar_hi = 0p;
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| 26 | static char * bookend_lo = (char *) -1;
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| 27 | static char * bookend_hi = 0p;
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| 28 |
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| 29 | // bookend pointers are set to stack addresses and compared (but not dereferenced)
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| 30 | // after their functions exit; they are "dangling"
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| 31 | #pragma GCC diagnostic push
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| 32 | #pragma GCC diagnostic ignored "-Wpragmas" // -Wdangling-pointer unrecognized until GCC 12
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| 33 | #pragma GCC diagnostic ignored "-Wdangling-pointer"
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| 34 |
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| 35 | void bookendInner( void ) {
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| 36 | char var = 'x';
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| 37 | (void) var;
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| 38 | bookend_lo = & var;
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| 39 | }
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| 40 |
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| 41 | #define TC(...)
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| 42 | #define TR( TRID, SZS, SZV, ETG, ACCS, SPS, OVLD ) \
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| 43 | F_SIG( bookendOuter, TRID, SZS, SZV, ACCS, SPS, OVLD ) { \
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| 44 | char var = 'x'; \
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| 45 | (void) var; \
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| 46 | bookend_hi = & var; \
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| 47 | return CALL( allocAndAccess, TRID, SZS, n, expectedElmSz, tcid, vart ); \
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| 48 | }
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| 49 | #include "boxed.cases.hfa"
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| 50 | #undef TC
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| 51 | #undef TR
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| 52 |
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| 53 | #pragma GCC diagnostic pop
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| 54 |
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| 55 | void resetBookends( void ) {
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| 56 | bookend_lo = (char *) -1;
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| 57 | bookend_hi = 0p;
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| 58 | ar_lo = (char *) -1;
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| 59 | ar_hi = 0p;
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| 60 | }
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| 61 |
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| 62 | void reportBookends( void ) {
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| 63 | ptrdiff_t ar_lo_fwd_offs = ar_lo - bookend_lo;
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| 64 | ptrdiff_t ar_hi_rev_offs = bookend_hi - ar_hi;
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| 65 |
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| 66 | VPRT( "Bookends are %p and %p\n", bookend_lo, bookend_hi );
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| 67 | VPRT( "Array ends are %p and %p\n", ar_lo, ar_hi );
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| 68 | VPRT( "Bookend lo fwd offset %zd\n", bookend_lo - bookend_lo );
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| 69 | VPRT( "Array lo fwd offset %zd\n", ar_lo_fwd_offs );
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| 70 | VPRT( "Array hi fwd offset %zd\n", ar_hi - bookend_lo );
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| 71 | VPRT( "Bookend hi fwd offset %zd\n", bookend_hi - bookend_lo );
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| 72 | VPRT( "Bookend lo rev offset %zd\n", bookend_hi - bookend_lo );
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| 73 | VPRT( "Array lo rev offset %zd\n", bookend_hi - ar_lo );
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| 74 | VPRT( "Array hi rev offset %zd\n", ar_hi_rev_offs );
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| 75 | VPRT( "Bookend hi rev offset %zd\n", bookend_hi - bookend_hi );
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| 76 |
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| 77 | if (bookend_lo >= bookend_hi) {
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| 78 | printf("bookends were not set\n");
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| 79 | return;
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| 80 | }
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| 81 | if (ar_lo >= ar_hi) {
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| 82 | printf("array bounds were not set\n");
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| 83 | return;
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| 84 | }
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| 85 |
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| 86 | printf("array starts after lo bookend: %s\n", ar_lo_fwd_offs > 0 ? "yes" : "no" );
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| 87 | printf("array ends before hi bookend: %s\n", ar_hi_rev_offs > 0 ? "yes" : "no" );
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| 88 | }
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