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authorPaul Eggert <eggert@cs.ucla.edu>2017-11-22 11:21:44 -0800
committerPaul Eggert <eggert@cs.ucla.edu>2017-11-22 11:22:30 -0800
commit0285e6bdf223314d7751a83795001c0e87a1f825 (patch)
tree5870edf990eaf76bf8019effeef0b8cf3c529bf4 /posix/regcomp.c
parent4bae615022cb5a5da79ccda83cc6c9ba9f2d479c (diff)
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* posix/regcomp.c (init_word_char): Add comments.
Diffstat (limited to 'posix/regcomp.c')
-rw-r--r--posix/regcomp.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/posix/regcomp.c b/posix/regcomp.c
index 520596b..81c2932 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -925,12 +925,15 @@ init_word_char (re_dfa_t *dfa)
int ch = 0;
if (BE (dfa->map_notascii == 0, 1))
{
+ /* Avoid uint32_t and uint64_t as some non-GCC platforms lack
+ them, an issue when this code is used in Gnulib. */
bitset_word_t bits0 = 0x00000000;
bitset_word_t bits1 = 0x03ff0000;
bitset_word_t bits2 = 0x87fffffe;
bitset_word_t bits3 = 0x07fffffe;
if (BITSET_WORD_BITS == 64)
{
+ /* Pacify gcc -Woverflow on 32-bit platformns. */
dfa->word_char[0] = bits1 << 31 << 1 | bits0;
dfa->word_char[1] = bits3 << 31 << 1 | bits2;
i = 2;