Makefile.in (dce.o): Add $(EXCEPT_H).

	* Makefile.in (dce.o): Add $(EXCEPT_H).
	* dce.c: Include except.h and delete redundant vector definitions.
	(deletable_insn_p): Return false for non-call insns that can throw
	if DF is running.

From-SVN: r147002

1 files changed, 16 insertions, 9 deletions

diff --git a/gcc/ada/scans.ads b/gcc/ada/scans.ads
index 1120f06..6f9bcb8 100644
--- a/gcc/ada/scans.ads
+++ b/gcc/ada/scans.ads
@@ -345,36 +345,43 @@ package Scans is
    --  Note: these variables can only be referenced during the parsing of a
    --  file. Reference to any of them from Sem or the expander is wrong.
 
-   Scan_Ptr : Source_Ptr;
+   --  These variables are initialized as required by Scn.Initialize_Scanner,
+   --  and should not be referenced before such a call. However, there are
+   --  situations in which these variables are saved and restored, and this
+   --  may happen before the first Initialize_Scanner call, resulting in the
+   --  assignment of invalid values. To avoid this, and allow building with
+   --  the -gnatVa switch, we initialize some variables to known valid values.
+
+   Scan_Ptr : Source_Ptr := No_Location; -- init for -gnatVa
    --  Current scan pointer location. After a call to Scan, this points
    --  just past the end of the token just scanned.
 
-   Token : Token_Type;
+   Token : Token_Type := No_Token; -- init for -gnatVa
    --  Type of current token
 
-   Token_Ptr : Source_Ptr;
+   Token_Ptr : Source_Ptr := No_Location; -- init for -gnatVa
    --  Pointer to first character of current token
 
-   Current_Line_Start : Source_Ptr;
-   --  Pointer to first character of line containing current token
+   Current_Line_Start : Source_Ptr := No_Location; -- init for -gnatVa
+   --  Pointer to first character of line containing current token.
 
-   Start_Column : Column_Number;
+   Start_Column : Column_Number := No_Column_Number; -- init for -gnatVa
    --  Starting column number (zero origin) of the first non-blank character
    --  on the line containing the current token. This is used for error
    --  recovery circuits which depend on looking at the column line up.
 
-   Type_Token_Location : Source_Ptr;
+   Type_Token_Location : Source_Ptr := No_Location; -- init for -gnatVa
    --  Within a type declaration, gives the location of the TYPE keyword that
    --  opened the type declaration. Used in checking the end column of a record
    --  declaration, which can line up either with the TYPE keyword, or with the
    --  start of the line containing the RECORD keyword.
 
-   Checksum : Word;
+   Checksum : Word := 0; -- init for -gnatVa
    --  Used to accumulate a CRC representing the tokens in the source
    --  file being compiled. This CRC includes only program tokens, and
    --  excludes comments.
 
-   First_Non_Blank_Location : Source_Ptr;
+   First_Non_Blank_Location : Source_Ptr := No_Location; -- init for -gnatVa
    --  Location of first non-blank character on the line containing the
    --  current token (i.e. the location of the character whose column number
    --  is stored in Start_Column).