Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
Pushed to master as obvious.
Reported by clang13 -Wunused-but-set-variable:
gcc/ChangeLog:
* dbgcnt.c (dbg_cnt_process_opt): Remove unused but set variable.
* gcov.c (get_cycles_count): Likewise.
* lto-compress.c (lto_compression_zlib): Likewise.
(lto_uncompression_zlib): Likewise.
* targhooks.c (default_pch_valid_p): Likewise.
libcpp/ChangeLog:
* charset.c (convert_oct): Remove unused but set variable.
---
gcc/dbgcnt.c | 2 --
gcc/gcov.c | 4 +---
gcc/lto-compress.c | 4 ----
gcc/targhooks.c | 4 +---
libcpp/charset.c | 2 --
5 files changed, 2 insertions(+), 14 deletions(-)
diff --git a/gcc/dbgcnt.c b/gcc/dbgcnt.c
index 6a7eb34cd3e..458341a53a0 100644
--- a/gcc/dbgcnt.c
+++ b/gcc/dbgcnt.c
@@ -208,7 +208,6 @@ void
dbg_cnt_process_opt (const char *arg)
{
char *str = xstrdup (arg);
- unsigned int start = 0;
auto_vec<char *> tokens;
for (char *next = strtok (str, ","); next != NULL; next = strtok (NULL, ","))
@@ -227,7 +226,6 @@ dbg_cnt_process_opt (const char *arg)
if (!dbg_cnt_process_single_pair (name, ranges[j]))
break;
}
- start += strlen (tokens[i]) + 1;
}
}
diff --git a/gcc/gcov.c b/gcc/gcov.c
index 829e955a63b..3672ae7a6f8 100644
--- a/gcc/gcov.c
+++ b/gcc/gcov.c
@@ -843,7 +843,6 @@ get_cycles_count (line_info &linfo)
Therefore, operating on a permuted order (i.e., non-sorted) only
has the effect of permuting the output cycles. */
- bool loop_found = false;
gcov_type count = 0;
for (vector<block_info *>::iterator it = linfo.blocks.begin ();
it != linfo.blocks.end (); it++)
@@ -851,8 +850,7 @@ get_cycles_count (line_info &linfo)
arc_vector_t path;
block_vector_t blocked;
vector<block_vector_t > block_lists;
- loop_found |= circuit (*it, path, *it, blocked, block_lists, linfo,
- count);
+ circuit (*it, path, *it, blocked, block_lists, linfo, count);
}
return count;
diff --git a/gcc/lto-compress.c b/gcc/lto-compress.c
index b5f4916b139..c40a13c8446 100644
--- a/gcc/lto-compress.c
+++ b/gcc/lto-compress.c
@@ -250,7 +250,6 @@ lto_compression_zlib (struct lto_compression_stream *stream)
const size_t outbuf_length = Z_BUFFER_LENGTH;
unsigned char *outbuf = (unsigned char *) xmalloc (outbuf_length);
z_stream out_stream;
- size_t compressed_bytes = 0;
int status;
gcc_assert (stream->is_compression);
@@ -282,7 +281,6 @@ lto_compression_zlib (struct lto_compression_stream *stream)
stream->callback ((const char *) outbuf, out_bytes, stream->opaque);
lto_stats.num_compressed_il_bytes += out_bytes;
- compressed_bytes += out_bytes;
cursor += in_bytes;
remaining -= in_bytes;
@@ -342,7 +340,6 @@ lto_uncompression_zlib (struct lto_compression_stream
*stream)
size_t remaining = stream->bytes;
const size_t outbuf_length = Z_BUFFER_LENGTH;
unsigned char *outbuf = (unsigned char *) xmalloc (outbuf_length);
- size_t uncompressed_bytes = 0;
gcc_assert (!stream->is_compression);
timevar_push (TV_IPA_LTO_DECOMPRESS);
@@ -378,7 +375,6 @@ lto_uncompression_zlib (struct lto_compression_stream
*stream)
stream->callback ((const char *) outbuf, out_bytes, stream->opaque);
lto_stats.num_uncompressed_il_bytes += out_bytes;
- uncompressed_bytes += out_bytes;
cursor += in_bytes;
remaining -= in_bytes;
diff --git a/gcc/targhooks.c b/gcc/targhooks.c
index cbbcedf790f..812bbe3f16e 100644
--- a/gcc/targhooks.c
+++ b/gcc/targhooks.c
@@ -2200,7 +2200,7 @@ pch_option_mismatch (const char *option)
/* Default version of pch_valid_p. */
const char *
-default_pch_valid_p (const void *data_p, size_t len)
+default_pch_valid_p (const void *data_p, size_t len ATTRIBUTE_UNUSED)
{
struct cl_option_state state;
const char *data = (const char *)data_p;
@@ -2221,7 +2221,6 @@ default_pch_valid_p (const void *data_p, size_t len)
memcpy (&tf, data, sizeof (target_flags));
data += sizeof (target_flags);
- len -= sizeof (target_flags);
r = targetm.check_pch_target_flags (tf);
if (r != NULL)
return r;
@@ -2233,7 +2232,6 @@ default_pch_valid_p (const void *data_p, size_t len)
if (memcmp (data, state.data, state.size) != 0)
return pch_option_mismatch (cl_options[i].opt_text);
data += state.size;
- len -= state.size;
}
return NULL;
diff --git a/libcpp/charset.c b/libcpp/charset.c
index b84a9740165..e4e45f6d39d 100644
--- a/libcpp/charset.c
+++ b/libcpp/charset.c
@@ -1464,7 +1464,6 @@ convert_oct (cpp_reader *pfile, const uchar *from, const
uchar *limit,
cppchar_t c, n = 0;
size_t width = cvt.width;
size_t mask = width_to_mask (width);
- bool overflow = false;
/* loc_reader and ranges must either be both NULL, or both be non-NULL. */
gcc_assert ((loc_reader != NULL) == (ranges != NULL));
@@ -1477,7 +1476,6 @@ convert_oct (cpp_reader *pfile, const uchar *from, const
uchar *limit,
from++;
if (loc_reader)
char_range.m_finish = loc_reader->get_next ().m_finish;
- overflow |= n ^ (n << 3 >> 3);
n = (n << 3) + c - '0';
}
--
2.33.0
