diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/codegen/core/gen_hpack_tables.c | 13 | ||||
| -rw-r--r-- | tools/codegen/core/gen_legal_metadata_characters.c | 7 |
2 files changed, 17 insertions, 3 deletions
diff --git a/tools/codegen/core/gen_hpack_tables.c b/tools/codegen/core/gen_hpack_tables.c index d924aba602..bae4e4cd73 100644 --- a/tools/codegen/core/gen_hpack_tables.c +++ b/tools/codegen/core/gen_hpack_tables.c @@ -71,7 +71,11 @@ static unsigned char prefix_mask(unsigned char prefix_len) { unsigned char i; unsigned char out = 0; for (i = 0; i < prefix_len; i++) { - out |= (unsigned char)(1 << (7 - i)); + /* NB: the following integer arithmetic operation needs to be in its + * expanded form due to the "integral promotion" performed (see section + * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type + * is then required to avoid the compiler warning */ + out = (unsigned char)(out | (unsigned char)(1 << (7 - i))); } return out; } @@ -92,7 +96,12 @@ static void generate_first_byte_lut(void) { chrspec = NULL; for (j = 0; j < num_fields; j++) { if ((prefix_mask(fields[j].prefix_length) & i) == fields[j].prefix) { - suffix = suffix_mask(fields[j].prefix_length) & (unsigned char)i; + /* NB: the following integer arithmetic operation needs to be in its + * expanded form due to the "integral promotion" performed (see section + * 3.2.1.1 of the C89 draft standard). A cast to the smaller container + * type is then required to avoid the compiler warning */ + suffix = (unsigned char)(suffix_mask(fields[j].prefix_length) & + (unsigned char)i); if (suffix == suffix_mask(fields[j].prefix_length)) { if (fields[j].index != 2) continue; } else if (suffix == 0) { diff --git a/tools/codegen/core/gen_legal_metadata_characters.c b/tools/codegen/core/gen_legal_metadata_characters.c index 2ffda54a21..677fa5c155 100644 --- a/tools/codegen/core/gen_legal_metadata_characters.c +++ b/tools/codegen/core/gen_legal_metadata_characters.c @@ -41,7 +41,12 @@ static unsigned char legal_bits[256 / 8]; static void legal(int x) { int byte = x / 8; int bit = x % 8; - legal_bits[byte] |= (unsigned char)(1 << bit); + /* NB: the following integer arithmetic operation needs to be in its + * expanded form due to the "integral promotion" performed (see section + * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type + * is then required to avoid the compiler warning */ + legal_bits[byte] = + (unsigned char)((legal_bits[byte] | (unsigned char)(1 << bit))); } static void dump(void) { |