This patch makes NIH_{SHOULD,ZERO,MUST} return the values of their
arguments, so
NIH_MUST (foo = bar());
becomes
foo = NIH_MUST (bar());
--CJD
=== modified file 'nih/error.h'
--- nih/error.h 2008-05-18 11:38:29 +0000
+++ nih/error.h 2009-02-17 21:09:01 +0000
@@ -95,18 +95,20 @@
/* Force a true value, checking for ENOMEM on a false one */
-#define NIH_SHOULD(_e) \
- while (! (_e)) { \
- NihError *_nih_should_err; \
- \
- _nih_should_err = nih_error_get (); \
- if (_nih_should_err->number == ENOMEM) { \
- nih_free (_nih_should_err); \
- } else { \
- nih_error_raise_again (_nih_should_err); \
- break; \
- } \
- }
+#define NIH_SHOULD(_e) ({ \
+ typeof (_e) ret; \
+ while (! (ret = (_e))) { \
+ NihError *err; \
+ \
+ err = nih_error_get (); \
+ if (err->number != ENOMEM) { \
+ nih_free (err); \
+ ret = (typeof (ret))0; \
+ } \
+ nih_free (err); \
+ } \
+ ret; \
+)}
NIH_BEGIN_EXTERN
=== modified file 'nih/macros.h'
--- nih/macros.h 2007-03-08 12:07:16 +0000
+++ nih/macros.h 2009-02-17 21:09:16 +0000
@@ -65,10 +65,17 @@
#define NIH_LIKELY(_e) __builtin_expect ((_e) ? TRUE : FALSE, TRUE)
#define NIH_UNLIKELY(_e) __builtin_expect ((_e) ? TRUE : FALSE, FALSE)
-/* Force a true or false value, _e must be an assignment expression */
-#define NIH_MUST(_e) while (! (_e))
-#define NIH_ZERO(_e) while ((_e))
-
+/* Force a true or false value */
+#define NIH_MUST(_e) ({ \
+ typeof (_e) ret; \
+ while (! (ret = (_e))); \
+ ret; \
+})
+#define NIH_ZERO(_e) ({ \
+ typeof (_e) ret; \
+ while (ret = (_e)); \
+ ret; \
+})
/* Make gettext friendlier */
#if ENABLE_NLS
--
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