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| author | Eric Blake <eblake@redhat.com> | 2012-09-04 16:53:19 -0600 |
|---|---|---|
| committer | Gary V. Vaughan <gary@gnu.org> | 2013-09-18 20:53:32 +0700 |
| commit | 4c0e23155dbd417bc6ede1d03107e8870aca60fc (patch) | |
| tree | 4eb924a7c9be5518bbca12fea364a543732bed57 | |
| parent | 2bacbb871b9dd05362405cf2ceedb32a0f6d14e2 (diff) | |
| download | m4-4c0e23155dbd417bc6ede1d03107e8870aca60fc.tar.gz | |
build: mark several pure functions
Found by using gcc 4.7.0's -Wsuggest-attribute=pure.
* m4/system_.h (M4_GNUC_PURE): New macro.
* m4/builtin.c (m4_builtin_find_by_name, m4_builtin_find_by_func):
Mark pure.
Signed-off-by: Eric Blake <eblake@redhat.com>
| -rw-r--r-- | m4/builtin.c | 4 | ||||
| -rw-r--r-- | m4/system_.h | 1 |
2 files changed, 3 insertions, 2 deletions
diff --git a/m4/builtin.c b/m4/builtin.c index c46e5b51..51f636e4 100644 --- a/m4/builtin.c +++ b/m4/builtin.c @@ -38,7 +38,7 @@ compare_builtin_name_CB (const void *name, const void *b) search only in MODULE's builtin table. The result is a malloc'd symbol value, suitable for use in the symbol table or for an argument to m4_push_builtin. */ -m4_symbol_value * +m4_symbol_value * M4_GNUC_PURE m4_builtin_find_by_name (m4_module *module, const char *name) { m4_module *cur = module ? module : m4__module_next (NULL); @@ -64,7 +64,7 @@ m4_builtin_find_by_name (m4_module *module, const char *name) then search only in MODULE's builtin table. The result is a malloc'd symbol value, suitable for use in the symbol table or for an argument to m4_push_builtin. */ -m4_symbol_value * +m4_symbol_value * M4_GNUC_PURE m4_builtin_find_by_func (m4_module *module, m4_builtin_func *func) { m4_module *cur = module ? module : m4__module_next (NULL); diff --git a/m4/system_.h b/m4/system_.h index d9b4373e..01b8e05a 100644 --- a/m4/system_.h +++ b/m4/system_.h @@ -144,6 +144,7 @@ BEGIN_C_DECLS #define M4_GNUC_NORETURN M4_GNUC_ATTRIBUTE ((__noreturn__)) #define M4_GNUC_CONST M4_GNUC_ATTRIBUTE ((__const__)) #define M4_GNUC_UNUSED M4_GNUC_ATTRIBUTE ((__unused__)) +#define M4_GNUC_PURE M4_GNUC_ATTRIBUTE ((__pure__)) |