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bugfix: do not call memcmp for nil strings

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This commit is contained in:
Andreas Rumpf 2018-01-19 09:26:11 +01:00
commit 0b52466bb8
1 changed files with 6 additions and 3 deletions
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9
lib/system/sysstr.nim
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@ -25,9 +25,12 @@ proc cmpStrings(a, b: NimString): int {.inline, compilerProc.} =
if a == nil: return -1
if b == nil: return 1
let minlen = min(a.len, b.len)
result = c_memcmp(addr a.data, addr b.data, minlen.csize)
if result == 0:
result = a.len - b.len
if minlen > 0:
result = c_memcmp(addr a.data, addr b.data, minlen.csize)
if result == 0:
result = a.len - b.len
else:
result = 0
proc eqStrings(a, b: NimString): bool {.inline, compilerProc.} =
if a == b: return true