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| author | Kaveh R. Ghazi <ghazi@caip.rutgers.edu> | 2001-03-31 18:59:56 +0000 |
|---|---|---|
| committer | Kaveh Ghazi <ghazi@gcc.gnu.org> | 2001-03-31 18:59:56 +0000 |
| commit | cc56c744ee7845abff3f9be366c09616cdbb6f83 (patch) | |
| tree | 68ea74209b9d94ef6a9ffafe09d4fb89a5bfce2e | |
| parent | 7656d28aed3bb0d61a9eff78a43475f47e53376f (diff) | |
| download | gcc-cc56c744ee7845abff3f9be366c09616cdbb6f83.zip gcc-cc56c744ee7845abff3f9be366c09616cdbb6f83.tar.gz gcc-cc56c744ee7845abff3f9be366c09616cdbb6f83.tar.bz2 | |
* libiberty.h (alloca): Handle setting C_ALLOCA.
From-SVN: r40978
| -rw-r--r-- | include/ChangeLog | 4 | ||||
| -rw-r--r-- | include/libiberty.h | 7 |
2 files changed, 10 insertions, 1 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index 1c969ff..9334281 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,7 @@ +2001-03-31 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> + + * libiberty.h (alloca): Handle setting C_ALLOCA. + 2001-03-20 Jim Blandy <jimb@redhat.com> * demangle.h (enum gnu_v3_constructor_kinds, diff --git a/include/libiberty.h b/include/libiberty.h index c7a4d06..effe5f6 100644 --- a/include/libiberty.h +++ b/include/libiberty.h @@ -238,15 +238,20 @@ extern int vasprintf PARAMS ((char **, const char *, va_list)) /* Drastically simplified alloca configurator. If we're using GCC, we use __builtin_alloca; otherwise we use the C alloca. The C alloca is always available. You can override GCC by defining - USE_C_ALLOCA yourself. */ + USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is + also set/unset as it is often used to indicate whether code needs + to call alloca(0). */ extern PTR C_alloca PARAMS((size_t)); #undef alloca #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA # define alloca(x) __builtin_alloca(x) +# undef C_ALLOCA #else # define alloca(x) C_alloca(x) # undef USE_C_ALLOCA # define USE_C_ALLOCA 1 +# undef C_ALLOCA +# define C_ALLOCA 1 #endif #ifdef __cplusplus |