c++ - Assert and unused local variable warning in GCC don't mix well? -

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i have problem unused local variable warning in gcc.

often have code looks this:

bool success = foo(); assert(success);

this fine debug builds. in release however, assert compiles nothing, , gcc gives me warning.

what best way work around this? wrapping bool success = #ifdef not seem nice solution...

i define macro specific scenario

#ifndef ndebug #define verify(expression) assert(expression) #else #define verify(expression) expression #endif

i prefer approach on using local variable because doesn't pollute method values conditionally exist.

in general find helpful have 2 sets of macros in projects

  • assertxxx: debug execution
  • verifyxxx: retail + debug execution

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