From c27a9467692616900189fce43cd18d14bbda7929 Mon Sep 17 00:00:00 2001
From: Dan McGee <dan@archlinux.org>
Date: Sun, 8 Apr 2012 22:32:49 -0500
Subject: Fix a signed overflow error on i686 with GCC 4.7.0
Not sure why this one wasn't showing up on x86_64, but this fixes the
compile on i686.
diskspace.c: In function 'calculate_removed_size':
diskspace.c:247:4: error: assuming signed overflow does not occur when negating a division [-Werror=strict-overflow]
cc1: all warnings being treated as errors
Signed-off-by: Dan McGee <dan@archlinux.org>
---
lib/libalpm/diskspace.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
(limited to 'lib')
diff --git a/lib/libalpm/diskspace.c b/lib/libalpm/diskspace.c
index ac7dab00..daee2447 100644
--- a/lib/libalpm/diskspace.c
+++ b/lib/libalpm/diskspace.c
@@ -224,6 +224,7 @@ static int calculate_removed_size(alpm_handle_t *handle,
alpm_mountpoint_t *mp;
struct stat st;
char path[PATH_MAX];
+ blkcnt_t remove_size;
const char *filename = file->name;
snprintf(path, PATH_MAX, "%s%s", handle->root, filename);
@@ -243,8 +244,8 @@ static int calculate_removed_size(alpm_handle_t *handle,
}
/* the addition of (divisor - 1) performs ceil() with integer division */
- mp->blocks_needed -=
- (st.st_size + mp->fsp.f_bsize - 1) / mp->fsp.f_bsize;
+ remove_size = (st.st_size + mp->fsp.f_bsize - 1) / mp->fsp.f_bsize;
+ mp->blocks_needed -= remove_size;
mp->used |= USED_REMOVE;
}
@@ -265,6 +266,7 @@ static int calculate_installed_size(alpm_handle_t *handle,
const alpm_file_t *file = filelist->files + i;
alpm_mountpoint_t *mp;
char path[PATH_MAX];
+ blkcnt_t install_size;
const char *filename = file->name;
/* libarchive reports these as zero size anyways */
@@ -289,8 +291,8 @@ static int calculate_installed_size(alpm_handle_t *handle,
}
/* the addition of (divisor - 1) performs ceil() with integer division */
- mp->blocks_needed +=
- (file->size + mp->fsp.f_bsize - 1) / mp->fsp.f_bsize;
+ install_size = (file->size + mp->fsp.f_bsize - 1) / mp->fsp.f_bsize;
+ mp->blocks_needed += install_size;
mp->used |= USED_INSTALL;
}
--
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