| Getting Started with LEON Ada: Ada 95 Compilation System for Spacecraft Microprocessors | ||
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In Version 1.8, stack checks are included by default. To suppress all checks use the compiler option -gnatp. The stack limit, which is the lowest address in the stack, is held in global register %g7. Here is an example that overflows the 64K byte main program stack:
Example 2-8. Stack Overflow Check
$ more biggy.adb procedure Biggy is S : String (1 .. 100_000); begin null; end Biggy; $ leon-coff-gnatmake -g biggy biggy.adb:2:04: warning: "S" is never assigned a value leon-coff-gnatbind -x biggy.ali leon-coff-gnatlink -g biggy.ali $ leon-coff-run biggy Unhandled trap at PC = 0x020012fc: 89 - Storage_Error _ada_biggy(): .../biggy.adb:2