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4091e94660
The tricky business going there in oniguruma is saving a pointer in an int variable, passing that variable into a function and making it a pointer again. On 64bit windows casting a pointer to a 32 bit int will truncate that pointer. This kind of things won't work on Windows x64. [SNIPPET] unsigned long ul0[2], ul1, *ul2; ul0[0] = 42uL; ul0[0] = 24uL; ul1 = (unsigned long)ul0; ul2 = (unsigned long *)ul1; /* now it's broken, accessing ul2[0] will crash. */ [/SNIPPET] To make it portable, ULONG_PTR should be used in this case. In oniguruma this behaviour is to see at least in the following codepath: ext/mbstring/oniguruma/enc/unicode.c:10938 ext/mbstring/oniguruma/st.c:308 ext/mbstring/oniguruma/enc/unicode.c:10859
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/* This is a public domain general purpose hash table package written by Peter Moore @ UCB. */
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/* @(#) st.h 5.1 89/12/14 */
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#ifndef ST_INCLUDED
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#define ST_INCLUDED
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#ifdef _WIN32
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# include <windows.h>
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typedef ULONG_PTR st_data_t;
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#else
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typedef unsigned long st_data_t;
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#endif
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#define ST_DATA_T_DEFINED
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typedef struct st_table st_table;
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struct st_hash_type {
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int (*compare)();
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int (*hash)();
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};
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struct st_table {
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struct st_hash_type *type;
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int num_bins;
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int num_entries;
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struct st_table_entry **bins;
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};
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#define st_is_member(table,key) st_lookup(table,key,(st_data_t *)0)
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enum st_retval {ST_CONTINUE, ST_STOP, ST_DELETE, ST_CHECK};
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#ifndef _
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# define _(args) args
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#endif
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#ifndef ANYARGS
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# ifdef __cplusplus
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# define ANYARGS ...
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# else
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# define ANYARGS
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# endif
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#endif
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st_table *st_init_table _((struct st_hash_type *));
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st_table *st_init_table_with_size _((struct st_hash_type *, int));
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st_table *st_init_numtable _((void));
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st_table *st_init_numtable_with_size _((int));
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st_table *st_init_strtable _((void));
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st_table *st_init_strtable_with_size _((int));
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int st_delete _((st_table *, st_data_t *, st_data_t *));
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int st_delete_safe _((st_table *, st_data_t *, st_data_t *, st_data_t));
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int st_insert _((st_table *, st_data_t, st_data_t));
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int st_lookup _((st_table *, st_data_t, st_data_t *));
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int st_foreach _((st_table *, int (*)(ANYARGS), st_data_t));
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void st_add_direct _((st_table *, st_data_t, st_data_t));
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void st_free_table _((st_table *));
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void st_cleanup_safe _((st_table *, st_data_t));
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st_table *st_copy _((st_table *));
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#define ST_NUMCMP ((int (*)()) 0)
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#define ST_NUMHASH ((int (*)()) -2)
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#define st_numcmp ST_NUMCMP
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#define st_numhash ST_NUMHASH
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#endif /* ST_INCLUDED */
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