Oliver Smith
5cef6135da
Copy Alpine's gcc6 aport to temp. They don't have it built for aarch64 and armhf at the moment. Due to dependency checks, this means we can't build the kernels that need gcc6, even when cross compiling with gcc6-armhf etc. See #138 for details.
44 lines
1.9 KiB
Diff
44 lines
1.9 KiB
Diff
Enable -Wformat and -Wformat-security by default.
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--- a/gcc/c-family/c.opt
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+++ b/gcc/c-family/c.opt
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@@ -412,7 +412,7 @@ C ObjC C++ ObjC++ Var(warn_format_nonliteral) Warning LangEnabledBy(C ObjC C++ O
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Warn about format strings that are not literals
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Wformat-security
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-C ObjC C++ ObjC++ Var(warn_format_security) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0)
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+C ObjC C++ ObjC++ Var(warn_format_security) Init(1) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0)
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Warn about possible security problems with format functions
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Wformat-y2k
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@@ -424,7 +424,7 @@ C ObjC C++ ObjC++ Var(warn_format_zero_length) Warning LangEnabledBy(C ObjC C++
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Warn about zero-length formats
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Wformat=
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-C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
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+C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format) Init(1) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
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Warn about printf/scanf/strftime/strfmon format string anomalies
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Wignored-qualifiers
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--- a/gcc/doc/gcc.info
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+++ b/gcc/doc/gcc.info
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@@ -3451,6 +3451,8 @@ compiler warns that an unrecognized option is present.
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'-Wno-format-contains-nul', '-Wno-format-extra-args', and
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'-Wno-format-zero-length'. '-Wformat' is enabled by '-Wall'.
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+ This option is enabled by default in Alpine Linux.
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+
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'-Wno-format-contains-nul'
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If '-Wformat' is specified, do not warn about format strings
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that contain NUL bytes.
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@@ -3496,6 +3498,8 @@ compiler warns that an unrecognized option is present.
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future warnings may be added to '-Wformat-security' that are
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not included in '-Wformat-nonliteral'.)
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+ This option is enabled by default in Alpine Linux.
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+
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'-Wformat-y2k'
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If '-Wformat' is specified, also warn about 'strftime' formats
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that may yield only a two-digit year.
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