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msgq: check MAP_FAILED instead of NULL for mmap (#614)

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Dean Lee 2024-08-05 05:53:06 +08:00 committed by GitHub
parent 45110ffb9b
commit 622de235f7
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1 changed files with 1 additions and 1 deletions
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msgq/msgq.cc
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@ -108,7 +108,7 @@ int msgq_new_queue(msgq_queue_t * q, const char * path, size_t size){
char * mem = (char*)mmap(NULL, size + sizeof(msgq_header_t), PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
close(fd);
if (mem == NULL){
if (mem == MAP_FAILED){
return -1;
}
q->mmap_p = mem;