liblinux++

commit 1c825df3826ea8ed91a680b4e05c0610d75b8a5d
parent 01f91fef9e95f76fa044f6fe4a92bcd8a5fb61dc
Author: Henry Wilson <henry@henryandlizzy.uk>
Date:   Fri,  9 Jan 2026 01:03:51 +0000

tac: simplify allocation size

Diffstat:
M
tac.cpp
 | 
5
+++--

1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/tac.cpp b/tac.cpp
@@ -37,10 +37,11 @@ int main()
 
 	while (len == cap)
 	{
-		auto m = mmap(buf + cap, cap ? cap : 0x1000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_ANONYMOUS | MAP_PRIVATE, {}, 0);
+		size_t extra_size = cap ? cap : 0x1000;
+		auto m = mmap(buf + cap, extra_size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_ANONYMOUS | MAP_PRIVATE, {}, 0);
 		if (!m)
 			return 1;
-		cap += cap ? cap : 0x1000;
+		cap += extra_size;
 
 		len += rd(stdin, buf + len, buf + cap);
 	}