37 lines
1.2 KiB
Diff
37 lines
1.2 KiB
Diff
From commit 6f8dc568e6ab072bb8205b732f04e685bf9237c0
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From: Sebastien GODARD <sysstat@users.noreply.github.com>
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Date: Wed, May 17 21:10:31 2023 +0200
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Subject: Merge branch 'pkopylov-master'
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Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>
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diff --git a/common.c b/common.c
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index 48493b5f..0efe7ee3 100644
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--- a/common.c
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+++ b/common.c
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@@ -431,15 +431,17 @@ int check_dir(char *dirname)
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void check_overflow(unsigned int val1, unsigned int val2,
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unsigned int val3)
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{
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- if ((unsigned long long) val1 * (unsigned long long) val2 *
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- (unsigned long long) val3 > UINT_MAX) {
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+ if ((val1 != 0) && (val2 != 0) && (val3 != 0) &&
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+ (((unsigned long long) UINT_MAX / (unsigned long long) val1 <
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+ (unsigned long long) val2) ||
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+ ((unsigned long long) UINT_MAX / ((unsigned long long) val1 * (unsigned long long) val2) <
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+ (unsigned long long) val3))) {
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#ifdef DEBUG
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- fprintf(stderr, "%s: Overflow detected (%llu). Aborting...\n",
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- __FUNCTION__, (unsigned long long) val1 * (unsigned long long) val2 *
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- (unsigned long long) val3);
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+ fprintf(stderr, "%s: Overflow detected (%u,%u,%u). Aborting...\n",
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+ __FUNCTION__, val1, val2, val3);
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#endif
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- exit(4);
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- }
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+ exit(4);
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+ }
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}
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#ifndef SOURCE_SADC
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