fix signed integer oveflow which is UB and silencing other warnings #2
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Manu-sh
changed the title
Manu-sh
commented
Oct 25, 2021
| test | ||
| *.d | ||
| base45 | ||
| .idea/ |
Author
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nothing just prevent to push my ide folder
Manu-sh
commented
Oct 25, 2021
| max_dst_len = _max_dst_len ? *_max_dst_len : src_len * 4; | ||
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| for(int i = 0; i < src_len; i+=2) { | ||
| for(unsigned i = 0; i < src_len; i+=2) { |
Author
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silencing warnings about different sign
| src_len = strlen(src); | ||
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| for(int i = 0; i < src_len; i+=3) { | ||
| for(unsigned i = 0; i < src_len; i+=3) { |
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silencing warnings about different sign
| return -1; | ||
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| if ((255 == (a = _C2I[src[i]])) || (255 == (b = _C2I[src[i+1]]))) | ||
| if ((255 == (a = _C2I[(unsigned char)src[i]])) || (255 == (b = _C2I[(unsigned char)src[i+1]]))) |
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unsigned integer overflow is well defined, so this cast silence other useless warnings
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| printf("base64(\"%s\") -> \"%s\"\n", (char*)dec, enc); | ||
| }; | ||
| } |
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C standards doesn't allow ; after function definitions
| check("2021 Digital Green Certificates for travel", | ||
| "NF6OF6P34SED-EDAECS34ZKE1$CO345$CBWER.CGPC7WE.OEX.CBJEKWEKEC: C"); | ||
| }; | ||
| } |
Author
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C standards doesn't allow ; after function definitions
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As you should know signed integer overflow is UB, apart from that I strongly suggest you enable at least the compiler warnings (
-Walland-Wextraflags), i haven't looked for any other bugs.