diff options
Diffstat (limited to 'bfd/bfd-in2.h')
| -rw-r--r-- | bfd/bfd-in2.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h index b75c8e2..841cc46 100644 --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -50,6 +50,25 @@ extern "C" { #endif #endif +/* This is a utility macro to handle the situation where the code + wants to place a constant string into the code, followed by a + comma and then the length of the string. Doing this by hand + is error prone, so using this macro is safer. The macro will + also safely handle the case where a NULL is passed as the arg. */ +#define STRING_COMMA_LEN(STR) (STR), ((STR) ? sizeof (STR) - 1 : 0) +/* Unfortunately it is not possible to use the STRING_COMMA_LEN macro + to create the arguments to another macro, since the preprocessor + will mis-count the number of arguments to the outer macro (by not + evaluating STRING_COMMA_LEN and so missing the comma). This is a + problem for example when trying to use STRING_COMMA_LEN to build + the arguments to the strncmp() macro. Hence this alternative + definition of strncmp is provided here. + + Note - these macros do NOT work if STR2 is not a constant string. */ +#define CONST_STRNEQ(STR1,STR2) (strncmp ((STR1), (STR2), sizeof (STR2) - 1) == 0) +#define CONST_STRNCPY(STR1,STR2) strncpy ((STR1), (STR2), sizeof (STR2) - 1) + + /* The word size used by BFD on the host. This may be 64 with a 32 bit target if the host is 64 bit, or if other 64 bit targets have been selected with --enable-targets, or if --enable-64-bit-bfd. */ |