Fix coverity issues
This commit is contained in:
Than Ngo
parent
0c935dda02
commit
886b9e76e4
315
diffutils-3.7-coverity.patch
Normal file
315
diffutils-3.7-coverity.patch
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@ -0,0 +1,315 @@
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diff -up diffutils-3.7/lib/careadlinkat.c.me diffutils-3.7/lib/careadlinkat.c
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--- diffutils-3.7/lib/careadlinkat.c.me 2021-03-23 23:19:06.957542021 +0100
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+++ diffutils-3.7/lib/careadlinkat.c 2021-03-23 23:22:29.309145314 +0100
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@@ -1,6 +1,6 @@
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/* Read symbolic links into a buffer without size limitation, relative to fd.
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- Copyright (C) 2001, 2003-2004, 2007, 2009-2018 Free Software Foundation,
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+ Copyright (C) 2001, 2003-2004, 2007, 2009-2021 Free Software Foundation,
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Inc.
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This program is free software: you can redistribute it and/or modify
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@@ -38,75 +38,64 @@
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#include "allocator.h"
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-/* Assuming the current directory is FD, get the symbolic link value
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- of FILENAME as a null-terminated string and put it into a buffer.
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- If FD is AT_FDCWD, FILENAME is interpreted relative to the current
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- working directory, as in openat.
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-
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- If the link is small enough to fit into BUFFER put it there.
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- BUFFER's size is BUFFER_SIZE, and BUFFER can be null
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- if BUFFER_SIZE is zero.
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-
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- If the link is not small, put it into a dynamically allocated
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- buffer managed by ALLOC. It is the caller's responsibility to free
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- the returned value if it is nonnull and is not BUFFER. A null
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- ALLOC stands for the standard allocator.
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-
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- The PREADLINKAT function specifies how to read links. It operates
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- like POSIX readlinkat()
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- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>
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- but can assume that its first argument is the same as FD.
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+enum { STACK_BUF_SIZE = 1024 };
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- If successful, return the buffer address; otherwise return NULL and
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- set errno. */
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+/* Act like careadlinkat (see below), with an additional argument
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+ STACK_BUF that can be used as temporary storage.
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-char *
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-careadlinkat (int fd, char const *filename,
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+ If GCC_LINT is defined, do not inline this function with GCC 10.1
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+ and later, to avoid creating a pointer to the stack that GCC
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+ -Wreturn-local-addr incorrectly complains about. See:
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+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644
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+ Although the noinline attribute can hurt performance a bit, no better way
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+ to pacify GCC is known; even an explicit #pragma does not pacify GCC.
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+ When the GCC bug is fixed this workaround should be limited to the
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+ broken GCC versions. */
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+#if __GNUC_PREREQ (10, 1)
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+# if defined GCC_LINT || defined lint
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+__attribute__ ((__noinline__))
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+# elif __OPTIMIZE__ && !__NO_INLINE__
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+# define GCC_BOGUS_WRETURN_LOCAL_ADDR
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+# endif
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+#endif
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+static char *
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+readlink_stk (int fd, char const *filename,
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char *buffer, size_t buffer_size,
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struct allocator const *alloc,
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- ssize_t (*preadlinkat) (int, char const *, char *, size_t))
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+ ssize_t (*preadlinkat) (int, char const *, char *, size_t),
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+ char stack_buf[STACK_BUF_SIZE])
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{
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char *buf;
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size_t buf_size;
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size_t buf_size_max =
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SSIZE_MAX < SIZE_MAX ? (size_t) SSIZE_MAX + 1 : SIZE_MAX;
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- char stack_buf[1024];
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if (! alloc)
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alloc = &stdlib_allocator;
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- if (! buffer_size)
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+ if (!buffer)
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{
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- /* Allocate the initial buffer on the stack. This way, in the
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- common case of a symlink of small size, we get away with a
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- single small malloc() instead of a big malloc() followed by a
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- shrinking realloc(). */
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buffer = stack_buf;
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- buffer_size = sizeof stack_buf;
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+ buffer_size = STACK_BUF_SIZE;
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}
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buf = buffer;
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buf_size = buffer_size;
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- do
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+ while (buf)
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{
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/* Attempt to read the link into the current buffer. */
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ssize_t link_length = preadlinkat (fd, filename, buf, buf_size);
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size_t link_size;
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if (link_length < 0)
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{
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- /* On AIX 5L v5.3 and HP-UX 11i v2 04/09, readlink returns -1
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- with errno == ERANGE if the buffer is too small. */
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- int readlinkat_errno = errno;
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- if (readlinkat_errno != ERANGE)
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+ if (buf != buffer)
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{
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- if (buf != buffer)
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- {
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- alloc->free (buf);
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- errno = readlinkat_errno;
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- }
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- return NULL;
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+ int readlinkat_errno = errno;
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+ alloc->free (buf);
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+ errno = readlinkat_errno;
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}
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+ return NULL;
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}
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link_size = link_length;
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@@ -117,19 +106,19 @@ careadlinkat (int fd, char const *filena
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if (buf == stack_buf)
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{
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- char *b = (char *) alloc->allocate (link_size);
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+ char *b = alloc->allocate (link_size);
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buf_size = link_size;
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if (! b)
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break;
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- memcpy (b, buf, link_size);
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- buf = b;
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+ return memcpy (b, buf, link_size);
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}
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- else if (link_size < buf_size && buf != buffer && alloc->reallocate)
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+
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+ if (link_size < buf_size && buf != buffer && alloc->reallocate)
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{
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/* Shrink BUF before returning it. */
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- char *b = (char *) alloc->reallocate (buf, link_size);
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+ char *b = alloc->reallocate (buf, link_size);
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if (b)
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- buf = b;
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+ return b;
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}
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return buf;
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@@ -138,8 +127,8 @@ careadlinkat (int fd, char const *filena
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if (buf != buffer)
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alloc->free (buf);
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- if (buf_size <= buf_size_max / 2)
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- buf_size *= 2;
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+ if (buf_size < buf_size_max / 2)
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+ buf_size = 2 * buf_size + 1;
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else if (buf_size < buf_size_max)
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buf_size = buf_size_max;
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else if (buf_size_max < SIZE_MAX)
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@@ -149,12 +138,53 @@ careadlinkat (int fd, char const *filena
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}
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else
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break;
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- buf = (char *) alloc->allocate (buf_size);
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+ buf = alloc->allocate (buf_size);
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}
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- while (buf);
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if (alloc->die)
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alloc->die (buf_size);
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errno = ENOMEM;
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return NULL;
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}
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+
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+
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+/* Assuming the current directory is FD, get the symbolic link value
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+ of FILENAME as a null-terminated string and put it into a buffer.
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+ If FD is AT_FDCWD, FILENAME is interpreted relative to the current
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+ working directory, as in openat.
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+
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+ If the link is small enough to fit into BUFFER put it there.
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+ BUFFER's size is BUFFER_SIZE, and BUFFER can be null
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+ if BUFFER_SIZE is zero.
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+
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+ If the link is not small, put it into a dynamically allocated
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+ buffer managed by ALLOC. It is the caller's responsibility to free
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+ the returned value if it is nonnull and is not BUFFER. A null
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+ ALLOC stands for the standard allocator.
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+
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+ The PREADLINKAT function specifies how to read links. It operates
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+ like POSIX readlinkat()
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+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>
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+ but can assume that its first argument is the same as FD.
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+
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+ If successful, return the buffer address; otherwise return NULL and
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+ set errno. */
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+
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+char *
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+careadlinkat (int fd, char const *filename,
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+ char *buffer, size_t buffer_size,
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+ struct allocator const *alloc,
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+ ssize_t (*preadlinkat) (int, char const *, char *, size_t))
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+{
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+ /* Allocate the initial buffer on the stack. This way, in the
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+ common case of a symlink of small size, we get away with a
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+ single small malloc instead of a big malloc followed by a
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+ shrinking realloc. */
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+ #ifdef GCC_BOGUS_WRETURN_LOCAL_ADDR
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+ #warning "GCC might issue a bogus -Wreturn-local-addr warning here."
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+ #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>."
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+ #endif
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+ char stack_buf[STACK_BUF_SIZE];
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+ return readlink_stk (fd, filename, buffer, buffer_size, alloc,
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+ preadlinkat, stack_buf);
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+}
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diff -up diffutils-3.7/src/diff.c.me diffutils-3.7/src/diff.c
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diff -up diffutils-3.7/src/diff.h.me diffutils-3.7/src/diff.h
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--- diffutils-3.7/src/diff.h.me 2021-03-23 22:47:04.509390138 +0100
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+++ diffutils-3.7/src/diff.h 2021-03-23 22:58:35.022552755 +0100
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@@ -392,7 +392,7 @@ extern void print_sdiff_script (struct c
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extern char const change_letter[4];
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extern char const pr_program[];
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extern char *concat (char const *, char const *, char const *);
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-extern bool (*lines_differ) (char const *, size_t, char const *, size_t) _GL_ATTRIBUTE_PURE;
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+extern bool (*lines_differ) (char const *, size_t, char const *, size_t);
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extern bool lines_differ_singlebyte (char const *, size_t, char const *, size_t) _GL_ATTRIBUTE_PURE;
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#ifdef HANDLE_MULTIBYTE
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extern bool lines_differ_multibyte (char const *, size_t, char const *, size_t) _GL_ATTRIBUTE_PURE;
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diff -up diffutils-3.7/src/util.c.me diffutils-3.7/src/util.c
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--- diffutils-3.7/src/util.c.me 2021-03-23 23:01:58.105168496 +0100
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+++ diffutils-3.7/src/util.c 2021-03-23 23:18:18.833918967 +0100
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@@ -1144,6 +1144,7 @@ lines_differ_singlebyte (char const *s1,
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}
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#ifdef HANDLE_MULTIBYTE
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+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
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# define MBC2WC(T, END, MBLENGTH, WC, STATE, CONVFAIL) \
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do \
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{ \
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diff -up diffutils-3.7/lib/regcomp.c.me diffutils-3.7/lib/regcomp.c
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--- diffutils-3.7/lib/regcomp.c.me 2021-03-24 09:01:20.582271604 +0100
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+++ diffutils-3.7/lib/regcomp.c 2021-03-24 09:03:54.125287605 +0100
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@@ -3674,7 +3674,6 @@ build_charclass_op (re_dfa_t *dfa, RE_TR
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Idx alloc = 0;
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#endif /* not RE_ENABLE_I18N */
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reg_errcode_t ret;
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- re_token_t br_token;
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bin_tree_t *tree;
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sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
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@@ -3725,11 +3724,7 @@ build_charclass_op (re_dfa_t *dfa, RE_TR
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#endif
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/* Build a tree for simple bracket. */
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-#if defined GCC_LINT || defined lint
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- memset (&br_token, 0, sizeof br_token);
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-#endif
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- br_token.type = SIMPLE_BRACKET;
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- br_token.opr.sbcset = sbcset;
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+ re_token_t br_token = { .type = SIMPLE_BRACKET, .opr.sbcset = sbcset };
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tree = create_token_tree (dfa, NULL, NULL, &br_token);
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if (__glibc_unlikely (tree == NULL))
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goto build_word_op_espace;
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@@ -3820,11 +3815,7 @@ static bin_tree_t *
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create_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
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re_token_type_t type)
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{
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- re_token_t t;
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-#if defined GCC_LINT || defined lint
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- memset (&t, 0, sizeof t);
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-#endif
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- t.type = type;
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+ re_token_t t = { .type = type };
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return create_token_tree (dfa, left, right, &t);
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}
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diff -up diffutils-3.7/lib/regexec.c.me diffutils-3.7/lib/regexec.c
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--- diffutils-3.7/lib/regexec.c.me 2021-03-24 08:50:16.101143023 +0100
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+++ diffutils-3.7/lib/regexec.c 2021-03-24 08:55:03.347246385 +0100
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@@ -828,7 +828,9 @@ re_search_internal (const regex_t *preg,
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break;
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if (__glibc_unlikely (err != REG_NOMATCH))
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goto free_return;
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+#ifdef DEBUG
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match_last = -1;
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+#endif
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}
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else
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break; /* We found a match. */
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@@ -3693,6 +3695,7 @@ group_nodes_into_DFAstates (const re_dfa
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bitset_empty (accepts);
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}
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}
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+ assume (ndests <= SBC_MAX);
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return ndests;
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error_return:
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for (j = 0; j < ndests; ++j)
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diff -up diffutils-3.7/lib/regex_internal.h.me diffutils-3.7/lib/regex_internal.h
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--- diffutils-3.7/lib/regex_internal.h.me 2021-03-24 08:54:03.464477733 +0100
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+++ diffutils-3.7/lib/regex_internal.h 2021-03-24 08:54:22.824728618 +0100
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@@ -34,6 +34,7 @@
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#include <stdint.h>
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#include <intprops.h>
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+#include <verify.h>
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#ifdef _LIBC
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# include <libc-lock.h>
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diff -up diffutils-3.7/src/ifdef.c.me diffutils-3.7/src/ifdef.c
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--- diffutils-3.7/src/ifdef.c.me 2021-03-24 18:10:43.265671781 +0100
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+++ diffutils-3.7/src/ifdef.c 2021-03-24 18:08:39.843320920 +0100
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@@ -362,7 +362,7 @@ do_printf_spec (FILE *out, char const *s
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printint print_value = value;
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size_t spec_prefix_len = f - spec - 2;
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size_t pI_len = sizeof pI - 1;
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-#if 0
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+#if HAVE_C_VARARRAYS
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char format[spec_prefix_len + pI_len + 2];
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#else
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char *format = xmalloc (spec_prefix_len + pI_len + 2);
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73
diffutils-3.7-false-positive.patch
Normal file
73
diffutils-3.7-false-positive.patch
Normal file
@ -0,0 +1,73 @@
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diff -up diffutils-3.7/lib/freopen-safer.c.me diffutils-3.7/lib/freopen-safer.c
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--- diffutils-3.7/lib/freopen-safer.c.me 2021-03-24 15:38:27.785170510 +0100
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+++ diffutils-3.7/lib/freopen-safer.c 2021-03-24 15:39:56.389523872 +0100
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@@ -49,6 +49,7 @@ protect_fd (int fd)
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}
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return false;
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}
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+ /* coverity[leaked_handle : FALSE] */
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return true;
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}
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diff -up diffutils-3.7/lib/regex_internal.c.me diffutils-3.7/lib/regex_internal.c
|
||||||
|
--- diffutils-3.7/lib/regex_internal.c.me 2021-03-24 15:45:12.934308141 +0100
|
||||||
|
+++ diffutils-3.7/lib/regex_internal.c 2021-03-24 15:48:06.165592478 +0100
|
||||||
|
@@ -1724,6 +1724,7 @@ create_cd_newstate (const re_dfa_t *dfa,
|
||||||
|
}
|
||||||
|
if (re_node_set_init_copy (newstate->entrance_nodes, nodes)
|
||||||
|
!= REG_NOERROR)
|
||||||
|
+ /* coverity[leaked_storage : FALSE] */
|
||||||
|
return NULL;
|
||||||
|
nctx_nodes = 0;
|
||||||
|
newstate->has_constraint = 1;
|
||||||
|
diff -up diffutils-3.7/src/analyze.c.me diffutils-3.7/src/analyze.c
|
||||||
|
--- diffutils-3.7/src/analyze.c.me 2021-03-24 17:16:35.560137760 +0100
|
||||||
|
+++ diffutils-3.7/src/analyze.c 2021-03-24 17:18:02.298846273 +0100
|
||||||
|
@@ -688,6 +688,7 @@ diff_2_files (struct comparison *cmp)
|
||||||
|
for (f = 0; f < 2; f++)
|
||||||
|
{
|
||||||
|
free (cmp->file[f].equivs);
|
||||||
|
+ /* coverity[offset_free : FALSE] */
|
||||||
|
free (cmp->file[f].linbuf + cmp->file[f].linbuf_base);
|
||||||
|
}
|
||||||
|
|
||||||
|
diff -up diffutils-3.7/src/diff3.c.me diffutils-3.7/src/diff3.c
|
||||||
|
--- diffutils-3.7/src/diff3.c.me 2021-03-24 17:18:21.317231331 +0100
|
||||||
|
+++ diffutils-3.7/src/diff3.c 2021-03-24 17:22:54.217398657 +0100
|
||||||
|
@@ -795,6 +795,7 @@ using_to_diff3_block (struct diff_block
|
||||||
|
D_LINEARRAY (result, FILEC) + result_offset,
|
||||||
|
D_LENARRAY (result, FILEC) + result_offset,
|
||||||
|
D_NUMLINES (ptr, FC)))
|
||||||
|
+ /* coverity[leaked_storage : FALSE] */
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
@@ -824,6 +825,7 @@ using_to_diff3_block (struct diff_block
|
||||||
|
D_LINEARRAY (result, FILE0 + d) + result_offset,
|
||||||
|
D_LENARRAY (result, FILE0 + d) + result_offset,
|
||||||
|
D_NUMLINES (ptr, FO)))
|
||||||
|
+ /* coverity[leaked_storage : FALSE] */
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
/* Catch the lines between here and the next diff */
|
||||||
|
diff -up diffutils-3.7/src/sdiff.c.me diffutils-3.7/src/sdiff.c
|
||||||
|
--- diffutils-3.7/src/sdiff.c.me 2021-03-24 17:24:37.022988328 +0100
|
||||||
|
+++ diffutils-3.7/src/sdiff.c 2021-03-24 17:25:39.145495628 +0100
|
||||||
|
@@ -1169,5 +1169,6 @@ temporary_file (void)
|
||||||
|
fd = mkstemp (buf);
|
||||||
|
if (0 <= fd)
|
||||||
|
tmpname = buf;
|
||||||
|
+ /* coverity[leaked_storage : FALSE] */
|
||||||
|
return fd;
|
||||||
|
}
|
||||||
|
diff -up diffutils-3.7/src/util.c.me diffutils-3.7/src/util.c
|
||||||
|
--- diffutils-3.7/src/util.c.me 2021-03-24 17:25:51.419067091 +0100
|
||||||
|
+++ diffutils-3.7/src/util.c 2021-03-24 17:36:28.882404028 +0100
|
||||||
|
@@ -699,6 +699,7 @@ parse_diff_color (void)
|
||||||
|
}
|
||||||
|
colors_enabled = false;
|
||||||
|
}
|
||||||
|
+/* coverity[leaked_storage : FALSE] */
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
@ -1,12 +1,14 @@
|
|||||||
Summary: GNU collection of diff utilities
|
Summary: GNU collection of diff utilities
|
||||||
Name: diffutils
|
Name: diffutils
|
||||||
Version: 3.7
|
Version: 3.7
|
||||||
Release: 8%{?dist}
|
Release: 9%{?dist}
|
||||||
URL: https://www.gnu.org/software/diffutils/diffutils.html
|
URL: https://www.gnu.org/software/diffutils/diffutils.html
|
||||||
Source: https://ftp.gnu.org/gnu/diffutils/diffutils-%{version}.tar.xz
|
Source: https://ftp.gnu.org/gnu/diffutils/diffutils-%{version}.tar.xz
|
||||||
Patch1: diffutils-cmp-s-empty.patch
|
Patch1: diffutils-cmp-s-empty.patch
|
||||||
Patch2: diffutils-i18n.patch
|
Patch2: diffutils-i18n.patch
|
||||||
Patch3: diffutils-fix-gnulib-tests.patch
|
Patch3: diffutils-fix-gnulib-tests.patch
|
||||||
|
Patch4: diffutils-3.7-coverity.patch
|
||||||
|
Patch5: diffutils-3.7-false-positive.patch
|
||||||
License: GPLv3+
|
License: GPLv3+
|
||||||
Provides: bundled(gnulib)
|
Provides: bundled(gnulib)
|
||||||
BuildRequires: gcc
|
BuildRequires: gcc
|
||||||
@ -28,19 +30,13 @@ to merge two files interactively.
|
|||||||
Install diffutils if you need to compare text files.
|
Install diffutils if you need to compare text files.
|
||||||
|
|
||||||
%prep
|
%prep
|
||||||
%setup -q
|
%autosetup -p1
|
||||||
# For 'cmp -s', compare file sizes only if both non-zero (bug #563618).
|
|
||||||
%patch1 -p1 -b .cmp-s-empty
|
|
||||||
|
|
||||||
%patch2 -p1 -b .i18n
|
|
||||||
|
|
||||||
# Fix from gnulib upstream, commit 175e0bc (bug #1863423).
|
|
||||||
%patch3 -p1 -b .fix-gnulib-tests
|
|
||||||
|
|
||||||
# Run autoreconf for aarch64 support (bug #925256).
|
# Run autoreconf for aarch64 support (bug #925256).
|
||||||
autoreconf
|
autoreconf
|
||||||
|
|
||||||
%build
|
%build
|
||||||
|
%global optflags %{optflags} -Dlint
|
||||||
%configure
|
%configure
|
||||||
make PR_PROGRAM=%{_bindir}/pr
|
make PR_PROGRAM=%{_bindir}/pr
|
||||||
|
|
||||||
@ -63,6 +59,9 @@ make check
|
|||||||
%{_infodir}/diffutils.info*
|
%{_infodir}/diffutils.info*
|
||||||
|
|
||||||
%changelog
|
%changelog
|
||||||
|
* Wed Mar 24 2021 Than Ngo <than@redhat.com> - 3.7-9
|
||||||
|
- Fix coverity issues
|
||||||
|
|
||||||
* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 3.7-8
|
* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 3.7-8
|
||||||
- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
|
- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user