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Fix fread segfault with \x1a bytes #7415

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Fix fread segfault with \x1a bytes #7415

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d947244
Add test for fread segfault with \x1a bytes
ANAMASGARD Nov 5, 2025
0b34a60
Merge branch 'master' into fix-7407-fread-x1a
ANAMASGARD Nov 6, 2025
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11 changes: 11 additions & 0 deletions inst/tests/tests.Rraw
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Original file line number Diff line number Diff line change
Expand Up @@ -21858,3 +21858,14 @@ test(2344.04, key(DT[, .(V4 = c("b", "a"), V2, V5 = c("y", "x"), V1)]), c("V1",

# fread with quotes and single column #7366
test(2345, fread('"this_that"\n"2025-01-01 00:00:01"'), data.table(this_that = as.POSIXct("2025-01-01 00:00:01", tz="UTC")))

# Test cases that reproduce the segfault when fread encounters \\x1a (ASCII SUB) character at or near end of field #7407
test(9063.1, {
fread(text=paste0("foo\n", strrep("a", 4096*100), "\x1a"))
TRUE
}, TRUE)

test(9063.2, {
fread(text="a,b\n1,2\n3,4\x1a")
TRUE
}, TRUE)
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