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Date:      Mon, 2 Jan 2017 14:22:36 -0500
From:      Pedro Giffuni <pfg@FreeBSD.org>
To:        cem@freebsd.org
Cc:        src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r311109 - head/usr.bin/patch
Message-ID:  <aa9172cb-cb95-36cf-c21d-48f8a7450ad5@FreeBSD.org>
In-Reply-To: <CAG6CVpUUFoTZBO0Ja2aSn%2BeMi_BO0u131YKQ1yQumu%2BdRhVY3A@mail.gmail.com>
References:  <201701021823.v02INWXc028047@repo.freebsd.org> <CAG6CVpUUFoTZBO0Ja2aSn%2BeMi_BO0u131YKQ1yQumu%2BdRhVY3A@mail.gmail.com>

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Hi;

On 01/02/17 13:28, Conrad Meyer wrote:
> IMO this patch was mostly fine, you just need to restrict line length
> to UINT32_MAX/2 instead of UINT_MAX (== UINT32_MAX) for 32-bit
> platforms.
>
> Best,
> Conrad
>

I dislike the idea of special cases for some platforms. I guess moving 
to int/INT_MAX would be the way to go.

TBH, no one has asked for patches wider than USHRT_MAX though.

Pedro.

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Index: usr.bin/patch/patch.c
===================================================================
--- usr.bin/patch/patch.c	(revision 311110)
+++ usr.bin/patch/patch.c	(working copy)
@@ -753,7 +753,7 @@
 
 	fprintf(rejfp, "%c%s", ch, line);
 	if (len == 0 || line[len - 1] != '\n') {
-		if (len >= USHRT_MAX)
+		if (len >= INT_MAX)
 			fprintf(rejfp, "\n\\ Line too long\n");
 		else
 			fprintf(rejfp, "\n\\ No newline at end of line\n");
@@ -1024,7 +1024,7 @@
 	LINENUM		pat_lines = pch_ptrn_lines() - fuzz;
 	const char	*ilineptr;
 	const char	*plineptr;
-	unsigned short	plinelen;
+	int		plinelen;
 
 	for (iline = base + offset + fuzz; pline <= pat_lines; pline++, iline++) {
 		ilineptr = ifetch(iline, offset >= 0);
Index: usr.bin/patch/pch.c
===================================================================
--- usr.bin/patch/pch.c	(revision 311109)
+++ usr.bin/patch/pch.c	(working copy)
@@ -56,7 +56,7 @@
 static LINENUM	p_context = 3;	/* # of context lines */
 static LINENUM	p_input_line = 0;	/* current line # from patch file */
 static char	**p_line = NULL;/* the text of the hunk */
-static unsigned short	*p_len = NULL; /* length of each line */
+static int	*p_len = NULL;	/* length of each line */
 static char	*p_char = NULL;	/* +, -, and ! */
 static int	hunkmax = INITHUNKMAX;	/* size of above arrays to begin with */
 static int	p_indent;	/* indent to patch */
@@ -136,7 +136,7 @@
 	if (p_line == NULL)
 		p_line = malloc(hunkmax * sizeof(char *));
 	if (p_len == NULL)
-		p_len = malloc(hunkmax * sizeof(unsigned short));
+		p_len = malloc(hunkmax * sizeof(int));
 	if (p_char == NULL)
 		p_char = malloc(hunkmax * sizeof(char));
 }
@@ -153,7 +153,7 @@
 		fatal("Internal memory allocation error\n");
 
 	p_line = reallocf(p_line, new_hunkmax * sizeof(char *));
-	p_len = reallocf(p_len, new_hunkmax * sizeof(unsigned short));
+	p_len = reallocf(p_len, new_hunkmax * sizeof(int));
 	p_char = reallocf(p_char, new_hunkmax * sizeof(char));
 
 	if (p_line != NULL && p_len != NULL && p_char != NULL) {
@@ -1210,7 +1210,7 @@
 pch_swap(void)
 {
 	char	**tp_line;	/* the text of the hunk */
-	unsigned short	*tp_len;/* length of each line */
+	int	*tp_len;	/* length of each line */
 	char	*tp_char;	/* +, -, and ! */
 	LINENUM	i;
 	LINENUM	n;
@@ -1367,7 +1367,7 @@
 /*
  * Return the length of a particular patch line.
  */
-unsigned short
+int
 pch_line_len(LINENUM line)
 {
 	return p_len[line];
Index: usr.bin/patch/pch.h
===================================================================
--- usr.bin/patch/pch.h	(revision 311109)
+++ usr.bin/patch/pch.h	(working copy)
@@ -44,7 +44,7 @@
 bool		another_hunk(void);
 bool		pch_swap(void);
 char		*pfetch(LINENUM);
-unsigned short	pch_line_len(LINENUM);
+int		pch_line_len(LINENUM);
 LINENUM		pch_first(void);
 LINENUM		pch_ptrn_lines(void);
 LINENUM		pch_newfirst(void);

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