Re: Temporary String Space errors

In article <D2M19L.Gx4@world.std.com>, mdl@world.std.com (Michael D Lemon) wrote: > > I will get that tech info. Here's an excerpt from the FAQ. The complete Tech Info can be found in Appendix A (recommended reading): 4.1.1 I keep getting -4518 errors! How can I fix this problem? ------------------------------------------------------------- The -4518 error is usually caused by running out of a resource known as temporary string space. Solutions include: 1) Upgrade to 4GL-RDS 4.12 or greater. 2) Compile to a "real" executable with 4GL/C, rather than RDS. (You're less likely to hit it using 4GL/C) 3) Read Loren West's excellent description of how TSS is used (see Appendix A) 4) Read Informix TechInfo sheet #3925 (Loren's Article). Other -4518 related entries are 4064, 4517, and 2801. 5) Try to make do with the following information (most of which only address the symptoms, not the causes): This error can be caused by any of the following coding structures: 1) LET l_str = "Hello ",myfunc("World")) 2) CASE statements without an OTHERWISE # Pre-4.1 3) CASE statements that look like this: # Pre-4.11 (maybe 4.10) CASE dummy_var WHEN 0 ..... WHEN 1 ..... WHEN 2 ..... END CASE instead of this: CASE WHEN dummy_var = 0 ..... WHEN dummy_var = 1 ..... WHEN dummy_var = 2 ..... END CASE 4) Reports with excessive string usage (ie. USING, or other literals) One thing you can do to reduce the contents of string storage is to assign redundant strings associated with USING to variables and then refer to the variable: let l_str1 = '$$$$$$$$.$$' PRINT l_number USING l_str1 5) RETURNing large strings from functions. 6) Use of SPACE, SPACES, COLUMN, UPSHIFT, DOWNSHIFT, or WORDWRAP 7) Assignment of NULL to a string subscript: DEFINE x, y CHAR(10) LET y = NULL LET x[3,5] = y BEWARE: There seems to be a bug in 4GL/ID (4.1 at least) which causes TSS problems to occur after the interrupt key has been pressed, which isn't very helpful if you're trying to find TSS problems in your program!!! Regards, Kerry S --------------------------------------,------------------------------------- Kerry Sainsbury, kerry@kcbbs.gen.nz | THE INFORMIX FAQ Quanta Systems, Auckland, New Zealand | kcbbs.gen.nz:/informix/* | mathcs.emory.edu:/pub/informix/faq/* +64 9 377-4473 (work) 276-5546 (home) | quasar.ucar.edu:/?