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zos: avoid UB with NULL pointer arithmetic

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PR-URL: https://github.com/libuv/libuv/pull/2017
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: John Barboza <jbarboza@ca.ibm.com>
This commit is contained in:
Carlo Marcelo Arenas Belón 2018-10-09 14:55:30 -07:00 committed by Santiago Gimeno
parent dc2476cd69
commit 1cead826cb
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1 changed files with 1 additions and 3 deletions
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src/unix/os390.c
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@ -357,13 +357,11 @@ uint64_t uv_get_total_memory(void) {
int uv_resident_set_memory(size_t* rss) {
char* psa;
char* ascb;
char* rax;
size_t nframes;
psa = PSA_PTR;
ascb = *(char* __ptr32 *)(psa + PSAAOLD);
ascb = *(char* __ptr32 *)(PSA_PTR + PSAAOLD);
rax = *(char* __ptr32 *)(ascb + ASCBRSME);
nframes = *(unsigned int*)(rax + RAXFMCT);