gdb: No symbol “i” in current context

Question

While debugging a C program in gdb I have a breakpoint in a for loop. I cannot print the value of \"i\" ( I get : No symbol \"i\" in current context.). I can print the value of

Answer 1

I encountered this issue recently. I compiled GCC 5.1 and then used it to compile a C++11 codebase. And, although I could step through the program's code in gdb, I couldn't print the value of any variable, I kept getting “No symbol "xyz" in current context” errors, for every variable.

I was using gdb 7.4, but the latest version available at the time was 7.9. I downloaded the latest version of gdb and compiled it (using GCC 5.1) and when using gdb 7.9 I was able to successfully inspect variable values again.

I guess the debug information of GCC 5.1 is incompatible with gdb 7.4.