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[printf] Test empty format string, and empty arg string #2018

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Jul 23, 2024
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[printf] Test empty format string, and empty arg string #2018

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10 changes: 10 additions & 0 deletions test_conformance/printf/util_printf.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -714,6 +714,12 @@ testCase testCaseChar = {

std::vector<printDataGenParameters> printStringGenParameters = {

// empty format
{ {""}, "\"foo\"" },
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This results in a printf call with an excess data argument (printf("\n","foo");), but that should be fine according to the spec:

If the format is exhausted while arguments remain, the excess arguments are evaluated (as always) but are otherwise ignored.


// empty argument
{ {"%s"}, "\"\"" },

//(Minimum)Four-wide,zero-filled,default(right)-justified

{ { "%4s" }, "\"foo\"" },
Expand Down Expand Up @@ -766,6 +772,10 @@ std::vector<printDataGenParameters> printStringGenParameters = {

std::vector<std::string> correctBufferString = {

"",

"",

" foo",

"f",
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