tests: detect too long parameter

[marcinslusarz]

... which can lead to buffer overflow and stack corruption.

Found by Coverity.

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This change is 

[krzycz]

Reviewed 1 of 1 files at r1. Review status: all files reviewed at latest revision, all discussions resolved.

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Comments from Reviewable

[codecov[bot]]

Codecov Report

Merging #386 into master will increase coverage by 0.03%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #386      +/-   ##
==========================================
+ Coverage      77%   77.03%   +0.03%     
==========================================
  Files          67       67              
  Lines        8261     8261              
  Branches     1658     1658              
==========================================
+ Hits         6361     6364       +3     
+ Misses       1488     1484       -4     
- Partials      412      413       +1

Flag	Coverage Δ
#ltp_tests	46.55% <ø> (+0.01%)	:arrow_up:
#sqlite_tests	45.24% <ø> (-0.01%)	:arrow_down:
#tests_antool	14.72% <ø> (ø)	:arrow_up:
#tests_posix_multi_threaded	25.09% <ø> (+0.01%)	:arrow_up:
#tests_posix_single_threaded	54.28% <ø> (ø)	:arrow_up:
#tests_preload	44.74% <ø> (-0.09%)	:arrow_down:

Impacted Files	Coverage Δ
src/libpmemfile-posix/rename.c	91.6% <0%> (-0.41%)	:arrow_down:
src/libpmemfile-posix/dir.c	85.5% <0%> (+0.24%)	:arrow_up:
src/libpmemfile/path_resolve.c	90.47% <0%> (+0.59%)	:arrow_up:
src/libpmemfile-posix/fcntl.c	69.81% <0%> (+3.77%)	:arrow_up:

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[sarahjelinek]

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Reviewed 1 of 1 files at r1. Review status: :shipit: all files reviewed at latest revision, all discussions resolved, all commit checks successful.

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Comments from Reviewable