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[WebAssembly] Fix stack overflow in crc32_chorba_118960_nondestructive.

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Mika Lindqvist 2025-05-17 01:10:28 +03:00 committed by Hans Kristian Rosbach
parent 4b7037cd08
commit f90c01107f
1 changed files with 10 additions and 0 deletions
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10
arch/generic/crc32_chorba_c.c
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@ -1,4 +1,7 @@
#include "zbuild.h"
#if defined(__EMSCRIPTEN__)
# include "zutil_p.h"
#endif
#include "crc32_braid_p.h"
#include "crc32_braid_tbl.h"
#include "generic_functions.h"
@ -25,7 +28,11 @@
* @note Uses 128KB temporary buffer
*/
Z_INTERNAL uint32_t crc32_chorba_118960_nondestructive (uint32_t crc, const z_word_t* input, size_t len) {
#if defined(__EMSCRIPTEN__)
z_word_t* bitbuffer = (z_word_t*)zng_alloc(bitbuffersizebytes);
#else
ALIGNED_(16) z_word_t bitbuffer[bitbuffersizezwords];
#endif
const uint8_t* bitbufferbytes = (const uint8_t*) bitbuffer;
size_t i = 0;
@ -480,6 +487,9 @@ Z_INTERNAL uint32_t crc32_chorba_118960_nondestructive (uint32_t crc, const z_wo
crc = crc_table[(crc ^ final_bytes[j] ^ bitbufferbytes[(j+i) % bitbuffersizebytes]) & 0xff] ^ (crc >> 8);
}
#if defined(__EMSCRIPTEN__)
zng_free(bitbuffer);
#endif
return crc;
}