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irrt: use __builtin_alloca

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This commit is contained in:
Sebastien Bourdeauducq 2022-03-22 15:41:25 +08:00
parent 9d86b46e86
commit 718b076e50
2 changed files with 1 additions and 2 deletions
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1
nac3core/build.rs
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@ -26,7 +26,6 @@ fn main() {
"-S",
"-Wall",
"-Wextra",
"-Wno-implicit-function-declaration",
"-o",
"-",
];

2
nac3core/src/codegen/irrt/irrt.c
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@ -104,7 +104,7 @@ int32_t __nac3_list_slice_assign_var_size(
|| MAX(src_start, src_end) < MIN(dest_start, dest_end)
);
if (need_alloca) {
uint8_t *tmp = alloca(src_arr_len * size);
uint8_t *tmp = __builtin_alloca(src_arr_len * size);
__builtin_memcpy(tmp, src_arr, src_arr_len * size);
src_arr = tmp;
}