MahnoKropotkinvich/xv6-labs-2024-solution
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Put parentheses around macro argument.

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It might be too paranoid but makes it safe to deal with operators
with lower priorities than '+', '<<' for example.
This commit is contained in:
Wenyang Duan 2023-09-25 14:32:56 -07:00 committed by Frans Kaashoek
parent 92e60dd833
commit 343d1ab482
1 changed files with 1 additions and 1 deletions
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kernel/uart.c
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@ -13,7 +13,7 @@
// the UART control registers are memory-mapped
// at address UART0. this macro returns the
// address of one of the registers.
#define Reg(reg) ((volatile unsigned char *)(UART0 + reg))
#define Reg(reg) ((volatile unsigned char *)(UART0 + (reg)))
// the UART control registers.
// some have different meanings for