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Avoid TYPE_MAXIMUM, it depends on undefined behavior.

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This commit is contained in:
joerg 2015-09-12 19:05:11 +00:00
parent 664441867e
commit 4d3d7e27e9
1 changed files with 10 additions and 3 deletions
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13
gnu/dist/grep/src/grep.c vendored
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@ -1,4 +1,4 @@
/* $NetBSD: grep.c,v 1.15 2014/06/12 07:42:46 dholland Exp $ */
/* $NetBSD: grep.c,v 1.16 2015/09/12 19:05:11 joerg Exp $ */
/* grep.c - main driver file for grep.
Copyright 1992, 1997-1999, 2000 Free Software Foundation, Inc.
@ -53,6 +53,13 @@ struct stats
struct stat stat;
};
#include <limits.h>
#define MAX_OFF_T (sizeof(off_t) == sizeof(char) ? INT_MAX : \
(sizeof(off_t) == sizeof(short) ? SHRT_MAX : \
(sizeof(off_t) == sizeof(int) ? INT_MAX : \
(sizeof(off_t) == sizeof(long) ? LONG_MAX : \
(sizeof(off_t) == sizeof(long long) ? LLONG_MAX : INTMAX_MAX)))))
/* base of chain of stat buffers, used to detect directory loops */
static struct stats stats_base;
@ -1341,7 +1348,7 @@ main (int argc, char **argv)
eolbyte = '\n';
filename_mask = ~0;
max_count = TYPE_MAXIMUM (off_t);
max_count = MAX_OFF_T;
/* The value -1 means to use DEFAULT_CONTEXT. */
out_after = out_before = -1;
@ -1516,7 +1523,7 @@ main (int argc, char **argv)
break;
/* Fall through. */
case LONGINT_OVERFLOW:
max_count = TYPE_MAXIMUM (off_t);
max_count = MAX_OFF_T;
break;
default: