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2007-08-31 Bob Duff <duff@adacore.com> * par-ch4.adb (P_Simple_Expression): Fold long sequences of concatenations of string literals into a single literal, in order to avoid very deep recursion in the front end, which was causing stack overflow. * sem_eval.adb (Eval_Concatenation): If the left operand is the empty string, and the right operand is a string literal (the case of "" & "..."), optimize by avoiding copying the right operand -- just use the value of the right operand directly. * stringt.adb (Store_String_Chars): Optimize by growing the String_Chars table all at once, rather than appending characters one by one. (Write_String_Table_Entry): If the string to be printed is very long, just print the first few characters, followed by the length. Otherwise, doing "pn(n)" in the debugger can take an extremely long time. * sem_prag.adb (Process_Interface_Name): Replace loop doing Store_String_Char with Store_String_Chars. From-SVN: r127977
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