Merge revisions 14230, 14602, and 14604 from the BUF_REMOVAL branch to trunk.
The change eliminates the fixed size buffers in gen_suppression and
show_used_suppressions. This is achieved by changing the return type from
VG_TDICT_CALL(tool_get_extra_suppression_info and
VG_TDICT_CALL(tool_print_extra_suppression_use from Bool to SizeT.
A return value of 0 indicates that nothing (except the terminating '\0'
which is always inserted) was written to the buffer. This corresponds to the
previous False return value. A return value which is equal to the buffer
size (that was passed in as function argument) indicates that the buffer was
not large enough. The caller then resizes the buffer and retries.
Otherwise, the buffer was large enough.
Regtested with a resize value of 1.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14606 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/m_libcprint.c b/coregrind/m_libcprint.c
index e367767..cdeabb2 100644
--- a/coregrind/m_libcprint.c
+++ b/coregrind/m_libcprint.c
@@ -227,6 +227,17 @@
/* --------- snprintf --------- */
+/* The return value of VG_(snprintf) and VG_(vsnprintf) differs from
+ what is defined in C99. Let S be the size of the buffer as given in
+ the 2nd argument.
+ Return value R:
+ R < S: The output string was successfully written to the buffer.
+ It is null-terminated and R == strlen( output string )
+ R == S: The supplied buffer was too small to hold the output string.
+ The first S-1 characters of the output string were written
+ to the buffer followed by the terminating null character.
+*/
+
typedef
struct {
HChar* buf;