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CPP: Speed up startsWithIfndef. #331

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Oct 18, 2018
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CPP: Speed up startsWithIfndef. #331

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7 changes: 5 additions & 2 deletions cpp/ql/src/semmle/code/cpp/headers/MultipleInclusion.qll
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Original file line number Diff line number Diff line change
Expand Up @@ -114,8 +114,11 @@ pragma[noopt] predicate correctIncludeGuard(HeaderFile hf, PreprocessorDirective
*/
predicate startsWithIfndef(HeaderFile hf, PreprocessorDirective ifndef, string macroName) {
ifndefDirective(ifndef, macroName) and
ifndef.getFile() = hf and
ifndef.getLocation().getStartLine() = min(int l | includeGuardRelevantLine(hf, l))
exists(Location loc |
loc = ifndef.getLocation() and
loc.getFile() = hf and
loc.getStartLine() = min(int l | includeGuardRelevantLine(hf, l))
)
}

private predicate endifLocation(PreprocessorEndif endif, File f, int line) {
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