err/err.c: improve err_clear_last_constant_time's portability.
@@ -880,6 +880,25 @@ int ERR_clear_last_mark(void)
return 1;
}
+#ifdef UINTPTR_T
+# undef UINTPTR_T
+#endif
+/*
+ * uintptr_t is the answer, but unfortunately C89, current "least common
+ * denominator" doesn't define it. Most legacy platforms typedef it anyway,
+ * so that attempt to fill the gaps means that one would have to identify
+ * that track these gaps, which would be undesirable. Macro it is...
+ */
+#if defined(__VMS) && __INITIAL_POINTER_SIZE==64
+/*
+ * But we can't use size_t on VMS, because it adheres to sizeof(size_t)==4
+ * even in 64-bit builds, which means that it won't work as mask.
+ */
+# define UINTPTR_T unsigned long long
+#else
+# define UINTPTR_T size_t
+#endif
+
void err_clear_last_constant_time(int clear)
{
ERR_STATE *es;
@@ -893,8 +912,8 @@ void err_clear_last_constant_time(int clear)
es->err_flags[top] &= ~(0 - clear);
es->err_buffer[top] &= ~(0UL - clear);
- es->err_file[top] = (const char *)((uintptr_t)es->err_file[top] &
- ~((uintptr_t)0 - clear));
+ es->err_file[top] = (const char *)((UINTPTR_T)es->err_file[top] &
+ ~((UINTPTR_T)0 - clear));
es->err_line[top] |= 0 - clear;
es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS;
