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fix possible integer overflows in timing functions

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This commit is contained in:
Fabian Greffrath 2022-02-15 21:45:01 +01:00
parent fb8c4e77d0
commit 28f0d25c3f
1 changed files with 4 additions and 4 deletions
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8
Source/i_system.c
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@ -83,7 +83,7 @@ int I_GetTimeMS(void)
int I_GetTime_RealTime(void) int I_GetTime_RealTime(void)
{ {
return I_GetTimeMS() * TICRATE / 1000; return (int64_t)I_GetTimeMS() * TICRATE / 1000;
} }
// killough 4/13/98: Make clock rate adjustable by scale factor // killough 4/13/98: Make clock rate adjustable by scale factor
@ -92,7 +92,7 @@ int clock_rate;
static int I_GetTime_Scaled(void) static int I_GetTime_Scaled(void)
{ {
return I_GetTimeMS() * clock_rate * TICRATE / 100000; return (int64_t)I_GetTimeMS() * clock_rate * TICRATE / 100000;
} }
static int I_GetTime_FastDemo(void) static int I_GetTime_FastDemo(void)
@ -117,12 +117,12 @@ static int I_GetFracTimeFastDemo(void)
static int I_GetFracRealTime(void) static int I_GetFracRealTime(void)
{ {
return I_GetTimeMS() * TICRATE % 1000 * FRACUNIT / 1000; return (int64_t)I_GetTimeMS() * TICRATE % 1000 * FRACUNIT / 1000;
} }
static int I_GetFracScaledTime(void) static int I_GetFracScaledTime(void)
{ {
return I_GetTimeMS() * clock_rate * TICRATE / 100 % 1000 * FRACUNIT / 1000; return (int64_t)I_GetTimeMS() * clock_rate * TICRATE / 100 % 1000 * FRACUNIT / 1000;
} }
int (*I_GetFracTime)(void) = I_GetFracRealTime; int (*I_GetFracTime)(void) = I_GetFracRealTime;