c745c54970
Hex escapes of the form \xff are not universally supported in the printf
implementations on the platforms that LLVM runs on (although they
apparently are in the shell builtins). Octal escapes are required to be
supported by POSIX. This patch converts all hex escapes to octal escapes
for compatibility reasons.
This came up when trying to turn on lit's internal shell by default for
llvm/. We started using /usr/bin/printf instead of the shell builtin on
MacOS, which does not support hex escapes.
I used the following python script to automate most of the conversion
with a few manual touchups needed:
```py
import sys
def process_line(to_process: str):
output = ""
i = 0
while i < len(to_process):
if to_process[i:i+2] == '\\x':
hex_string = to_process[i+2:i+4]
number = int(hex_string, 16)
output += "\\"
octal_string = oct(number)[2:]
if len(octal_string) == 1:
octal_string = "00" + octal_string
elif len(octal_string) == 2:
octal_string = "0" + octal_string
assert(len(octal_string) == 3)
output += octal_string
i += 4
else:
output += to_process[i]
i += 1
return output
with open(sys.argv[1]) as input_file:
lines = input_file.readlines()
for i, _ in enumerate(lines):
lines[i] = process_line(lines[i])
with open(sys.argv[1], 'w') as output_file:
output_file.writelines(lines)
```
38 lines
1.6 KiB
Plaintext
38 lines
1.6 KiB
Plaintext
# Test no input file
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RUN: not llvm-cgdata --convert --output - 2>&1 | FileCheck %s --check-prefix=NOFILE --ignore-case
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NOFILE: error: No input file is specified.
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# Test for empty cgdata file, which is invalid.
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RUN: touch %t_emptyfile.cgtext
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RUN: not llvm-cgdata --convert %t_emptyfile.cgtext --format text 2>&1 | FileCheck %s --check-prefix=EMPTY
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EMPTY: {{.}}emptyfile.cgtext: empty codegen data
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# Test for empty header in the text format. It can be converted to a valid binary file.
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RUN: printf '#' > %t_emptyheader.cgtext
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RUN: llvm-cgdata --convert %t_emptyheader.cgtext --format binary -o %t_emptyheader.cgdata
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# Without any cgdata other than the header, no data shows by default.
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RUN: llvm-cgdata --show %t_emptyheader.cgdata | count 0
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# The version number appears when asked, as it's in the header
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RUN: llvm-cgdata --show --cgdata-version %t_emptyheader.cgdata | FileCheck %s --check-prefix=VERSION
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VERSION: Version: 4
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# When converting a binary file (w/ the header only) to a text file, it's an empty file as the text format does not have an explicit header.
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RUN: llvm-cgdata --convert %t_emptyheader.cgdata --format text | count 0
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# Synthesize a header only cgdata.
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# struct Header {
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# uint64_t Magic;
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# uint32_t Version;
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# uint32_t DataKind;
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# uint64_t OutlinedHashTreeOffset;
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# uint64_t StableFunctionMapOffset;
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# }
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RUN: printf '\377cgdata\201' > %t_header.cgdata
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RUN: printf '\004\000\000\000' >> %t_header.cgdata
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RUN: printf '\000\000\000\000' >> %t_header.cgdata
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RUN: printf '\040\000\000\000\000\000\000\000' >> %t_header.cgdata
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RUN: printf '\040\000\000\000\000\000\000\000' >> %t_header.cgdata
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RUN: diff %t_header.cgdata %t_emptyheader.cgdata
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