Tracked down 12KiB bug

2 files changed, 4 insertions, 3 deletions

diff --git a/libc/Makefile b/libc/Makefile
index cbc2fc9..39ab1b4 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -16,7 +16,7 @@ LD = ../cross/opt/bin/i686-elf-ld
 AR = ../cross/opt/bin/i686-elf-ar
 AS = nasm
 
-CFLAGS = -Wall -Wextra -nostdlib -nostdinc -fno-builtin -fno-asynchronous-unwind-tables -mno-red-zone -mgeneral-regs-only -mpreferred-stack-boundary=2 -std=c99 -m32 -pedantic-errors -Iinc/ -Os
+CFLAGS = -Wall -Wextra -nostdlib -nostdinc -fno-builtin -fno-asynchronous-unwind-tables -mno-red-zone -mgeneral-regs-only -mpreferred-stack-boundary=2 -std=c99 -m32 -pedantic-errors -Iinc/ -Ofast
 
 ASFLAGS = -f elf32
 
diff --git a/libc/cpu.c b/libc/cpu.c
index b8d250b..a9e7241 100644
--- a/libc/cpu.c
+++ b/libc/cpu.c
@@ -54,7 +54,7 @@ void cpuid(int code, u32 *a, u32 *b, u32 *c, u32 *d)
 	__asm__ volatile("cpuid" : "=a"(*a), "=b"(*b), "=c"(*c), "=d"(*d) : "a"(code));
 }
 
-char *cpu_string(char buf[12])
+char *cpu_string(char buf[13])
 {
 	u32 a, b, c, d;
 	cpuid(CPUID_VENDOR_STRING, &a, &b, &c, &d);
@@ -73,12 +73,13 @@ char *cpu_string(char buf[12])
 	buf[9] = ecx[1];
 	buf[10] = ecx[2];
 	buf[11] = ecx[3];
+	buf[12] = 0;
 	return buf;
 }
 
 void cpu_print()
 {
-	char buf[12] = { 0 };
+	char buf[13] = { 0 };
 	printf("%s\n", cpu_string(buf));
 }