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cpitf.c, cp_istrue(), avoid surplus Warning Message when an `if' condition expands to nothing

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When in expression
  if $var ...
the variable `var' was undefined, then
ngspice printed a surplus warning message
>  Warning: NULL arithmetic expression
in addition to the error message
>  Error: var: no such variable.

ngspice continues to process the conditional construct
  and evaluates the condition as "FALSE"
This commit is contained in:
h_vogt
2016-03-26 21:58:39 +01:00
committed by rlar
parent dbb958fff8
commit 8b709a394f
2 changed files with 3 additions and 1 deletions
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examples/control_structs/if-test-1.cir
-1
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@@ -36,7 +36,6 @@ end
echo
echo "expect Error: testvar_d: no such variable."
echo "expect Warning: NULL arithmetic expression"
* in cp_istrue(): wl!=NULL then wl==NULL names==NULL v==NULL
if $testvar_d
echo "FAIL: you should not see this"