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author | Joel Brobecker <brobecker@adacore.com> | 2018-11-01 15:15:41 -0700 |
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committer | Joel Brobecker <brobecker@adacore.com> | 2018-11-01 15:15:41 -0700 |
commit | e2b7af7242c99e503747a43775d94beda90cb24e (patch) | |
tree | 659ca5849238ae0a7e9cf1a92caab1e350026726 /bfd | |
parent | 8b578f9c7626f57f5adb9e4a52f5b0d6c8f6e0a0 (diff) | |
download | binutils-e2b7af7242c99e503747a43775d94beda90cb24e.zip binutils-e2b7af7242c99e503747a43775d94beda90cb24e.tar.gz binutils-e2b7af7242c99e503747a43775d94beda90cb24e.tar.bz2 |
(Ada) fix "error in expression" when using watch -location command
The "watch -l EXPR" command with the language set to Ada currently
fails with the following error:
(gdb) watch -l global_var
Error in expression, near ` 0x000000000062d2d8'.
The error occurs because GDB internally translate the request into
a watchpoint on a different expression: "* (TYPE *) ADDR" where
TYPE and ADDR are the type and the address of the object returned
by the expression's evaluation (resp.). So, in the example above,
global_var being an integer stored at 0x000000000062d2d8, GDB tries
to set a watchpoint on "* (integer *) 0x000000000062d2d8", which
fails, because we try to parse this expression with Ada, when
in fact it is not valid.
This patch fixes the issue by implementing the la_watch_location_expression
language method, using a syntax that the Ada parser recognizes
("{TYPE} ADDR").
gdb/ChangeLog:
* ada-lang.c (ada_watch_location_expression): New function.
(ada_language_defn): Set la_watch_location_expression to
ada_watch_location_expression.
gdb/testsuite/ChangeLog:
* gdb.ada/watch_minus_l: New testcase.
Diffstat (limited to 'bfd')
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