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Carl Pearson
2022-03-02 06:48:21 -07:00
parent c3948b9091
commit 72f5ca9aaf
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content/post/20220301-gcc-flags/index.md
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@@ -44,6 +44,7 @@ The summaries are taken from https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.
* `-Wall`: turns on many warnings, but not "all." * `-Wall`: turns on many warnings, but not "all."
* `-Wextra`: turns on even more warnings, but still not all. * `-Wextra`: turns on even more warnings, but still not all.
* `-Wpedantic`: Issue all the warnings demanded by strict ISO C++.
* `-Wcast-align`: warn whenever a pointer is cast such that the required alignment is increased (`char*` -> `int*`). * `-Wcast-align`: warn whenever a pointer is cast such that the required alignment is increased (`char*` -> `int*`).
* `-Wcast-qual`: warn when qualifier (`const`) is cast away, or introduces a qualifier in an unsafe way. * `-Wcast-qual`: warn when qualifier (`const`) is cast away, or introduces a qualifier in an unsafe way.
* `-Wdisabled-optimization`: warn if a requested optimization pass is disabled (e.g. code is too large, has some other feature that makes g++ give up). * `-Wdisabled-optimization`: warn if a requested optimization pass is disabled (e.g. code is too large, has some other feature that makes g++ give up).
@@ -54,7 +55,6 @@ The summaries are taken from https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.
* `-Wmissing-include-dirs`: warn if a user-supplied include dir does not exist. * `-Wmissing-include-dirs`: warn if a user-supplied include dir does not exist.
* `-Wnull-dereference`: warn if paths that dereference a null pointer are detected. * `-Wnull-dereference`: warn if paths that dereference a null pointer are detected.
* `-Woverloaded-virtual`: warn when a function declaration hides virtual functions from a base class * `-Woverloaded-virtual`: warn when a function declaration hides virtual functions from a base class
* `-Wpedantic`: Issue all the warnings demanded by strict ISO C++.
* `-Wpointer-arith`: warn about `sizeof` for function types or `void`. * `-Wpointer-arith`: warn about `sizeof` for function types or `void`.
* `-Wshadow`: warn about variable shadowing and global function shadowing. * `-Wshadow`: warn about variable shadowing and global function shadowing.
* `-Wswitch-enum`: warn when a `switch` on an enum type is missing one of the enums. * `-Wswitch-enum`: warn when a `switch` on an enum type is missing one of the enums.