Changeset 40551

Timestamp:

Oct 20, 2018, 9:08:56 PM (8 years ago)

Author:

eugene

Message:

add ps_snprintf_nowarn function to avoid compiler optimization warnings triggered by overly-script gcc checking since 8.1

Location:

trunk/psLib/src/sys

Files:

• psString.c (modified) (1 diff)
• psString.h (modified) (1 diff)

trunk/psLib/src/sys/psString.c

@@ -496 +496 @@
 }
 
+// several snprintf statements below my truncate their output
+// gcc (since 8.1) warns if the output may be truncated.
+// the following NOOP function is used to fool the compiler
+// see ps_snprintf_nowarn in psString.h
+void psNOOP (void) { }

trunk/psLib/src/sys/psString.h

@@ -40 +40 @@
 #define PS_FILE_LINE p_psFileLine(__FILE__,__LINE__)
 
+// gcc (since 8.1) warns if the output may be truncated by snprint.
+// since that is sometimes a desired behavior, this version of snprintf
+// is defined to fool the compiler about this warning:
+// the following NOOP function is used to fool the compiler
+// see snprintf_nowarn in ohana.h
+#define ps_snprintf_nowarn(...) (snprintf(__VA_ARGS__) < 0 ? psNOOP() : 0)
+void psNOOP (void);
+
+// some constants to use in snprintf statements and variable definitions to ensure
+// consistency
+# define PS_SMALLWORD 16
+# define PS_BIGWORD 128
+
 /** Allocates a new psString.
  *