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Eclipse C/C++ Developer Guide
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Adding watchpoints

A watchpoint is a special breakpoint that stops the execution of an application whenever the value of a given expression changes, without specifying where it might occur. Unlike breakpoints (which are line-specific), watchpoints are associated with files. They take effect whenever a specified condition is true, regardless of when or where it occurred. You can set a watchpoint on a global variable by highlighting the variable in the editor, or by selecting it in the Outline view.

To set a watchpoint on a global variable:

  1. Highlight the variable in the editor, or select it in the Outline view.
  2. Click Run > Toggle Watchpoint.
  3. Do any of the following:
    • To stop execution when the watch expression is read, select the Read check box.
    • To stop execution when the watch expression is written to, select the Write check box.
  4. The watchpoint appears in the Breakpoints view list.

Related concepts
C/C++ Development perspective

Related tasks
Using breakpoints and watchpoints

Related reference
Run and Debug dialog box

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