Truncated stdio Return Value

[ArielSAdamsNASA]

Describe the bug
There are API usage errors with fgetc.

Expected behavior
Check EOF then cast value.

Code snips

elf2cfetbl/elf2cfetbl.c

Line 1746 in 10f55fb

while ((VerboseStr[i] = fgetc(SrcFileDesc)) != '\0')

elf2cfetbl/elf2cfetbl.c

Line 1927 in 10f55fb

while ((i < sizeof(VerboseStr)) && ((VerboseStr[i] = fgetc(SrcFileDesc)) != '\0'))

elf2cfetbl/elf2cfetbl.c

Line 2464 in 10f55fb

AByte = fgetc(SrcFileDesc);

elf2cfetbl/elf2cfetbl.c

Line 2617 in 10f55fb

AByte = fgetc(SrcFileDesc);

System observed on:
Coverity: https://scan.coverity.com/projects/arielsadamsnasa-cfs-jsf-rules?tab=overview

Additional context
Assigning the return value of fgetc to char AByte truncates its value.

Assigning the return value of fgetc to char VerboseStr[i] truncates its value.

Reporter Info
Ariel Adams, ASRC Federal