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grep: error if sbrk fails

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This commit is contained in:
BurnZeZ 2019-11-21 16:44:41 +00:00
parent 5510488879
commit 29b6ad3330
1 changed files with 4 additions and 0 deletions
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4
sys/src/cmd/grep/sub.c
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@ -11,10 +11,14 @@ mal(int n)
if(m < n) { if(m < n) {
if(n > Nhunk) { if(n > Nhunk) {
v = sbrk(n); v = sbrk(n);
if(v == (void*)-1)
error("sbrk");
memset(v, 0, n); memset(v, 0, n);
return v; return v;
} }
s = sbrk(Nhunk); s = sbrk(Nhunk);
if(s == (void*)-1)
error("sbrk");
m = Nhunk; m = Nhunk;
} }
v = s; v = s;