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authorTom Tromey <tom@tromey.com>2021-04-28 18:44:48 -0600
committerRichard Earnshaw <rearnsha@arm.com>2021-05-07 11:17:11 +0100
commitc759c777c98fab555d28d133ef0793607f8c3afc (patch)
tree05b6f52b6a4ec335853f019ce9cd2a9e6330f034 /libiberty
parent4cf88725da1cb503be04d3237354105ec170bc86 (diff)
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libiberty: add htab_eq_string
The libiberty hash table includes a helper function for strings, but no equality function. Consequently, this equality function has been reimplemented a number of times in both the gcc and binutils-gdb source trees. This patch adds the function to the libiberty hash table, as a step toward the goal of removing all the copies. One change to gcc is included here. Normally I would have put this in the next patch, but gensupport.c used the most natural name for its reimplementation of this function, and this can't coexist with the extern function in libiberty. include * hashtab.h (htab_eq_string): Declare. libiberty * hashtab.c (htab_eq_string): New function.
Diffstat (limited to 'libiberty')
-rw-r--r--libiberty/hashtab.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/libiberty/hashtab.c b/libiberty/hashtab.c
index 0c7208e..7c424e8 100644
--- a/libiberty/hashtab.c
+++ b/libiberty/hashtab.c
@@ -841,6 +841,13 @@ htab_hash_string (const PTR p)
return r;
}
+/* An equality function for null-terminated strings. */
+int
+htab_eq_string (const void *a, const void *b)
+{
+ return strcmp ((const char *) a, (const char *) b) == 0;
+}
+
/* DERIVED FROM:
--------------------------------------------------------------------
lookup2.c, by Bob Jenkins, December 1996, Public Domain.